{"id":224,"date":"2018-02-17T16:14:02","date_gmt":"2018-02-17T16:14:02","guid":{"rendered":"https:\/\/araucaria.camk.edu.pl\/?page_id=224"},"modified":"2026-03-04T09:45:58","modified_gmt":"2026-03-04T09:45:58","slug":"papers-star-type","status":"publish","type":"page","link":"https:\/\/araucaria.camk.edu.pl\/index.php\/papers-star-type\/","title":{"rendered":"Publications sorted by star type"},"content":{"rendered":"\n<p>This page provides information on papers published by members of the Araucaria Project sorted by a star type.<\/p>\n\n\n\n<p>Also sort by: <a href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/papers-date\/\" class=\"su-button su-button-style-soft\" style=\"color:#FFFFFF;background-color:#0c380e;border-color:#0a2d0c;border-radius:10px\" target=\"_self\"><span style=\"color:#FFFFFF;padding:0px 16px;font-size:13px;line-height:26px;border-color:#557457;border-radius:10px;text-shadow:none\"> date<\/span><\/a> <a href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/papers-first-author\" class=\"su-button su-button-style-soft\" style=\"color:#FFFFFF;background-color:#0c380e;border-color:#0a2d0c;border-radius:10px\" target=\"_self\"><span style=\"color:#FFFFFF;padding:0px 16px;font-size:13px;line-height:26px;border-color:#557457;border-radius:10px;text-shadow:none\"> first author<\/span><\/a> <a href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/papers-target\" class=\"su-button su-button-style-soft\" style=\"color:#FFFFFF;background-color:#0c380e;border-color:#0a2d0c;border-radius:10px\" target=\"_self\"><span style=\"color:#FFFFFF;padding:0px 16px;font-size:13px;line-height:26px;border-color:#557457;border-radius:10px;text-shadow:none\"> target galaxy<\/span><\/a> <a href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/papers-method\" class=\"su-button su-button-style-soft\" style=\"color:#FFFFFF;background-color:#0c380e;border-color:#0a2d0c;border-radius:10px\" target=\"_self\"><span style=\"color:#FFFFFF;padding:0px 16px;font-size:13px;line-height:26px;border-color:#557457;border-radius:10px;text-shadow:none\"> method<\/span><\/a>\n\n\n\n<p>See&nbsp;also astro-ph papers citing or referring to the <a href=\"https:\/\/arxiv.org\/search\/?query=%22Araucaria+Project%22&amp;searchtype=all&amp;abstracts=show&amp;order=-announced_date_first&amp;size=200\">Araucaria Project<\/a>.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-1 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p><a href=\"#lteb\">Late-type eclipsing binaries<\/a><br><a href=\"#eteb\">Early-type eclipsing binaries<\/a><br><a href=\"#eb\">Eclipsing binaries<\/a><br><a href=\"#sb\">Spectroscopic binaries<\/a><br><a href=\"#sg\">Supergiants<\/a><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p><a href=\"#ccep\">Classical Cepheids<\/a><br><a href=\"#t2cep\">Type II Cepheids<\/a><br><a href=\"#rrl\">RR Lyrae<\/a><br><a href=\"#rc\">Red Clump stars<\/a><br><a href=\"#rg\">Red Giant stars<\/a><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p><a href=\"#trgb\">Tip of the Red Giant Branch stars<\/a><br><a href=\"#jagb\">Carbon stars (JAGB)<\/a><br><a href=\"#other\">Other<\/a><\/p>\n<\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-alpha-channel-opacity has-background is-style-dots\" style=\"background-color:#275b12;color:#275b12\"\/>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"lteb\">Late-type eclipsing binaries<\/h1>\n\n\n\n<p><strong>Precise physical parameters of three late-type eclipsing binary giant stars in the Large Magellanic Cloud<br><\/strong><em>G. Rojas Garc\u00eda, D. Graczyk, G. Pietrzy\u0144ski, C. Ga\u0142an, W. Gieren, I. Thompson, K. Suchomska, M.<br>Ka\u0142uszy\u0144ski, I. Soszy\u0144ski, A. Udalski, P. Karczmarek, W. Narloch, M. G\u00f3rski, P. Wielg\u00f3rski, B. Zgirski, N.<br>Miller, G. Hajdu, B. Pilecki, M. Taormina, M. Lewis<\/em><br><a href=\"https:\/\/arxiv.org\/pdf\/2410.18619\">2024, arXiv:2410.18619<\/a><\/p>\n\n\n\n<p><strong>Eclipsing Binary Stars as Precise and Accurate Distance Indicators<\/strong><br><em>G. Pietrzy\u0144ski, D. Graczyk<\/em><br><a href=\"https:\/\/link.springer.com\/chapter\/10.1007\/978-981-99-0177-7_5\">2024, &#8220;The Hubble Constant Tension&#8221; Springer Series in Astrophysics and Cosmology<\/a><\/p>\n\n\n\n<p><strong>Evolved eclipsing binary systems in the Galactic bulge: Precise physical and orbital parameters of OGLE-BLG-ECL-305487 and OGLE-BLG-ECL-116218<\/strong><br><em>K. Suchomska, D. Graczyk, C. Ga\u0142an, O. Zi\u00f3\u0142kowska, R. Smolec, G. Pietrzy\u0144ski, W. Gieren, S. Villanova, M. G\u00f3rski, I.B. Thompson, P. Wielg\u00f3rski, B. Zgirski, P. Karczmarek, B. Pilecki, M. Taormina, W. Narloch, G. Hajdu, M.O. Lewis, M. Ka\u0142uszy\u0144ski, G. Rojas Garc\u00eda<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2022A%26A...668A..30S\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2022, A&amp;A 668, A30<\/a><\/p>\n\n\n\n<p><strong>Surface brightness-colour relations of dwarf stars from detached eclipsing binaries. I. Calibrating sample<\/strong><br><em>D. Graczyk, G. Pietrzy\u0144ski, C. Galan, J. Southworth, W. Gieren, M. Ka\u0142uszy\u0144ski, B. Zgirski, A. Gallenne, M. G\u00f3rski, G. Hajdu, P. Karczmarek, P. Kervella, P.F.L. Maxted, N. Nardetto, W. Narloch, B. Pilecki, W. Pych, G. Rojas Garc\u00eda, J. Storm, K. Suchomska, &#8230;<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2022A%26A...666A.128G\/abstract\">2022, A&amp;A, 666, A128<\/a><\/p>\n\n\n\n<p><strong>Progress on the calibration of surface brightness-color relations for early- and late-type stars<\/strong><br>A. <em>Salsi, N. Nardetto, D. Mourard, D. Graczyk, M. Taormina, O. Creevey, V. Hocd\u00e9, F. Morand, K. Perraut, G. Pietrzynski, G.H. Schaefer<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2021A&amp;A...652A..26S\/abstract\">2021, A&amp;A, 652, A26<\/a><\/p>\n\n\n\n<p><strong>The surface brightness-colour relations based on eclipsing binary stars and calibrated with Gaia EDR3<\/strong><br><em>D. Graczyk, G. Pietrzy\u0144ski, C. Ga\u0142an, W. Gieren, A. Tkachenko, R.I. Anderson, A. Gallenne, M. G\u00f3rski, G. Hajdu, M. Ka\u0142uszy\u0144ski, P. Karczmarek, P. Kervella, P.F.L. Maxted, N. Nardetto, W. Narloch, K. Pavlovski, B. Pilecki, W. Pych, J. Southworth, J. Storm, \u2026<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2021A&amp;A...649A.109G\/abstract\">2021, A&amp;A, 649, A109<\/a><\/p>\n\n\n\n<p><strong>A Distance Determination to the Small Magellanic Cloud with an Accuracy of Better than Two Percent Based on Late-type Eclipsing Binary Stars<\/strong><br><em>D. Graczyk, G. Pietrzy\u0144ski, I.B. Thompson, W. Gieren, B. Zgirski, S. Villanova, M. G\u00f3rski, P. Wielg\u00f3rski, P. Karczmarek, W. Narloch, B. Pilecki, M. Taormina, R. Smolec, K. Suchomska, A. Gallenne, N. Nardetto, J. Storm, R.-P. Kudritzki, M. Ka\u0142uszy\u0144ski, W. Pych<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2020arXiv201008754G\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2020, ApJ, 904, 13<\/a><\/p>\n\n\n\n<p><strong>A distance to the Large Magellanic Cloud that is precise to one per cent<\/strong><br><em>G. Pietrzy\u0144ski, D. Graczyk, A. Gallenne, W. Gieren, I.B. Thompson, B. Pilecki, P. Karczmarek, M. G\u00f3rski, K. Suchomska, M. Taormina, B. Zgirski, P. Wielg\u00f3rski, Z. Ko\u0142aczkowski, P. Konorski, S. Villanova, N. Nardetto, P. Kervella, F. Bresolin, R.-P. Kudritzki, J. Storm, &#8230;<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2019Natur.567..200P\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2019, Nature, 567, 200<\/a>&nbsp;&#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2019\/03\/15\/even-more-accurate-benchmark-for-cosmic-distances\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a><\/p>\n\n\n\n<p><strong>Accurate stellar parameters and distance to two evolved eclipsing binary systems, OGLE-BLG-ECL-123903 and OGLE-BLG-ECL-296596, towards the Galactic bulge<\/strong><br><em>K. Suchomska, D. Graczyk, G. Pietrzy\u0144ski, W. Gieren, J. Ostrowski, R. Smolec, A. Tkachenko, M. G\u00f3rski, P. Karczmarek, P. Wielg\u00f3rski, B. Zgirski, I.B. Thompson, S. Villanova, B. Pilecki, M. Taormina, Z. Ko\u0142aczkowski, W. Narloch, I. Soszy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2019A&amp;A...621A..93S\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2019, A&amp;A, 621A, 93<\/a><\/p>\n\n\n\n<p><strong>The Late-type Eclipsing Binaries in the Large Magellanic Cloud: Catalog of Fundamental Physical Parameters<\/strong><br><em>D. Graczyk, G. Pietrzy\u0144ski, I.B. Thompson, W. Gieren, B. Pilecki, P. Konorski, S. Villanova, M. G\u00f3rski, K. Suchomska, P. Karczmarek, K. St\u0119pie\u0144, J. Storm, M. Taormina, Z. Ko\u0142aczkowski, P. Wielg\u00f3rski, W. Narloch, B. Zgirski, A. Gallenne, J. Ostrowski, R. Smolec, &#8230;<br><\/em><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2018ApJ...860....1G\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2018, ApJ, 860, 1<\/a><\/p>\n\n\n\n<p><strong>Orbital and physical parameters, and the distance ef the eclipsing binary system OGLE-LMC-ECL-25658 in the Large Magellanic Cloud<\/strong><br><em>S.S. Elgueta, D. Graczyk, W. Gieren, G. Pietrzy\u0144ski, I.B. Thompson, P. Konorski, B. Pilecki, S. Villanova, A. Udalski, I. Soszynski, K. Suchomska, P. Karczmarek, M. G\u00f3rski, P. Wielg\u00f3rski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2016AJ....152...29E\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2016, AJ, 152, 29<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project. Accurate stellar parameters and distance to evolved eclipsing binary ASAS J180057-2333.8 in Sagittarius Arm<\/strong><br><em>K. Suchomska, D. Graczyk, R. Smolec, G. Pietrzy\u0144ski, W. Gieren, K. St\u0119pie\u0144, P. Konorski, B. Pilecki, S. Villanova, I.B. Thompson, M. G\u00f3rski, P. Karczmarek, P. Wielg\u00f3rski, R.I. Anderson<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2015MNRAS.451..651S\" target=\"_blank\" rel=\"noreferrer noopener\">2015, MNRAS, 451, 651<\/a><\/p>\n\n\n\n<p><strong>Orbital and physical parameters of eclipsing binaries from the ASAS catalogue &#8211; VIII. The totally eclipsing double-giant system HD 187669<\/strong><br><em>K. He\u0142miniak, D. Graczyk, M. Konacki, B. Pilecki, M. Ratajczak, G. Pietrzy\u0144ski, P. Sybilski, S. Villanova, W. Gieren, G. Pojma\u0144ski, P. Konorski, K. Suchomska, D. Reichart, K. Ivarsen, J. Haislip, A. LaCluyze<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2015MNRAS.448.1945H\" target=\"_blank\" rel=\"noreferrer noopener\">2015, MNRAS, 448, 1945<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project. The Distance to the Small Magellanic Cloud from Late-type Eclipsing Binaries<\/strong><br><em>D. Graczyk, G. Pietrzy\u0144ski, I. Thompson, W. Gieren, B. Pilecki, P. Konorski, A. Udalski, I. Soszy\u0144ski, S. Villanova, M. G\u00f3rski, K. Suchomska, P. Karczmarek, R.-P. Kudritzki, F. Bresolin, A. Gallenne<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2014ApJ...780...59G\" target=\"_blank\" rel=\"noreferrer noopener\">2014, ApJ, 780, 59<\/a> &#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2014\/01\/01\/distance-to-the-smc\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a><\/p>\n\n\n\n<p><strong>An eclipsing-binary distance to the Large Magellanic Cloud accurate to two per cent<\/strong><br><em>G. Pietrzy\u0144ski, D. Graczyk, W. Gieren, I. Thompson, B. Pilecki, A. Udalski, I. Soszy\u0144ski, S. Koz\u0142owski, P. Konorski, K. Suchomska, G. Bono, P. Moroni, S. Villanova, N. Nardetto, F. Bresolin, R.-P. Kudritzki, J. Storm, A. Gallenne, R. Smolec, D. Minniti, &#8230;<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2013Natur.495...76P\" target=\"_blank\" rel=\"noreferrer noopener\">2013, Nature, 495, 76<\/a> &#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2014\/03\/01\/distance-to-the-lmc\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a><\/p>\n\n\n\n<p><strong>The distance to the Small Magellanic Cloud from eclipsing binaries<\/strong><br><em>D. Graczyk, G. Pietrzy\u0144ski, B. Pilecki, I.-B. Thompson. W. Gieren, P. Konorski, A. Udalski, I. Soszy\u0144ski<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2013IAUS..289..222G\" target=\"_blank\" rel=\"noreferrer noopener\">2013, IAUS, 289, 222<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: Precise and accurate distance determination to the LMC and SMC<\/strong><br><em>G. Pietrzy\u0144ski, D. Graczyk, W. Gieren, I.-B. Thompson, I. Soszy\u0144ski, B. Pilecki, J. Storm, P. Konorski, K. Suchomska, A. Gallenne, N. Nardetto, P. Karczmarek, M. G\u00f3rski<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2013EAS....64..305P\" target=\"_blank\" rel=\"noreferrer noopener\">2013, EAS, 64, 305<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: An Accurate Distance to the Late-type Double-lined Eclipsing Binary OGLE SMC113.3 4007 in the Small Magellanic Cloud<\/strong><br><em>D. Graczyk, G. Pietrzy\u0144ski, I. Thompson, W. Gieren, B. Pilecki, A. Udalski, I. Soszy\u0144ski, Z. Ko\u0142aczkowski, R.-P. Kudritzki, F. Bresolin, P. Konorski, R. Mennickent, D. Minniti, J. Storm, N. Nardetto, P. Karczmarek<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2012ApJ...750..144G\" target=\"_blank\" rel=\"noreferrer noopener\">2012, ApJ, 750, 144<\/a><\/p>\n\n\n\n<p><strong>Precise Distances to the Magellanic Clouds From Unique Late-Type Long-Period Eclipsing Binaries<\/strong><br><em>G. Pietrzy\u0144ski, I.B. Thompson, D. Graczyk, W. Gieren, D. Minniti<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2010ASPC..435...13P\" target=\"_blank\" rel=\"noreferrer noopener\">2010, ASPC, 435, 13<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project. Determination of the Large Magellanic Cloud Distance from Late-Type Eclipsing Binary Systems. I. OGLE-051019.64-685812.3<\/strong><br><em>G. Pietrzy\u0144ski, I. Thompson, D. Graczyk, W. Gieren, A. Udalski, O. Szewczyk, D. Minniti, Z. Ko\u0142aczkowski, F. Bresolin, R.-P. Kudritzki<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2009ApJ...697..862P\" target=\"_blank\" rel=\"noreferrer noopener\">2009, ApJ, 697, 862<\/a><\/p>\n\n\n\n<div class=\"su-divider su-divider-style-default\" style=\"margin:16px 0;border-width:1px;border-color:#275b12\"><a href=\"#\" style=\"color:#275b12\">Go to top<\/a><\/div>\n\n\n\n<div class=\"su-spacer\" style=\"height:10px\"><\/div>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"eteb\">Early-type eclipsing binaries<\/h1>\n\n\n\n<p><strong>Toward Early-type Eclipsing Binaries as Extragalactic Milestones. IV. Physical Properties of Three Detached O\/B-type Systems in the LMC<\/strong><br><em>M. Taormina, G. Pietrzy\u0144ski, R.-P. Kudritzki, B. Pilecki, I.B. Thompson, J. Puls, M. G\u00f3rski, B. Zgirski, D. Graczyk, M.A. Urbaneja, W. Gieren, W. Narloch, G. Hajdu<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2025ApJ...980..178T\/abstract\">2025, ApJ, 980, 178T<\/a><\/p>\n\n\n\n<p><strong>Toward Early-type Eclipsing Binaries as Extragalactic Milestones. III. Physical Properties of the O-type Eclipsing Binary OGLE LMC-ECL-21568 in a Quadruple System<\/strong><br><em>M. Taormina, R.P. Kudritzki, B. Pilecki, G. Pietrzy\u0144ski, I.B. Thompson, J. Puls,M. G\u00f3rski, B. Zgirski, D. Graczyk, W. Gieren, G. Hajdu<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2024ApJ...967...64T\/abstract\">2024, ApJ 967, 64<\/a><\/p>\n\n\n\n<p><strong>Progress on the calibration of surface brightness-color relations for early- and late-type stars<\/strong><br>A. <em>Salsi, N. Nardetto, D. Mourard, D. Graczyk, M. Taormina, O. Creevey, V. Hocd\u00e9, F. Morand, K. Perraut, G. Pietrzynski, G.H. Schaefer<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2021A&amp;A...652A..26S\/abstract\">2021, A&amp;A, 652, A26<\/a><\/p>\n\n\n\n<p><strong>Towards early-type eclipsing binaries as extragalactic milestones: II. NLTE spectral analysis and stellar parameters of the detached O-type system OGLE-LMC-ECL-06782 in the LMC<\/strong><br><em>M. Taormina, R.-P. Kudritzki, J. Puls, B. Pilecki, E. Sextl, G. Pietrzy\u0144ski, M.A. Urbaneja, W. Gieren<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2020ApJ...890..137T\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2020, ApJ, 890, 137<\/a><\/p>\n\n\n\n<p><strong>A Survey for High-Mass Eclipsing Binaries<br><\/strong><em>F. Pozo Nu\u00f1ez, R. Chini, A. Barr Dom\u00ednguez, Ch. Fein, M. Hackstein, G. Pietrzy\u0144ski; M. Murphy<br><\/em><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2019MNRAS.490.5147P\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2019, MNRAS, 490, 5147<\/a><\/p>\n\n\n\n<p><strong>Towards early-type eclipsing binaries as extragalactic milestones: I. Physical parameters of OGLE-LMC-ECL-22270 and OGLE-LMC-ECL-06782<\/strong><br><em>M. Taormina, G. Pietrzy\u0144ski, B. Pilecki, R.-P. Kudritzki, I. B. Thompson, D. Graczyk, W. Gieren, N. Nardetto, M. G\u00f3rski, K. Suchomska, B. Zgirski, P. Wielg\u00f3rski, P. Karczmarek, W. Narloch<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2019ApJ...886..111T\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2019, ApJ, 886, 111<\/a><\/p>\n\n\n\n<p><strong>Theoretical impact of fast rotation on calibrating the surface brightness-color relation for early-type stars<\/strong><br><em>M. Challouf, N. Nardetto, A. Domiciano de Souza, D. Mourard, H. Aroui, P. Stee, O. Delaa, D. Graczyk, G. Pietrzy\u0144ski, W. Gieren<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2015A%26A...579A.107C\" target=\"_blank\" rel=\"noreferrer noopener\">2015, A&amp;A, 579, A107<\/a><\/p>\n\n\n\n<div class=\"su-divider su-divider-style-default\" style=\"margin:16px 0;border-width:1px;border-color:#275b12\"><a href=\"#\" style=\"color:#275b12\">Go to top<\/a><\/div>\n\n\n\n<div class=\"su-spacer\" style=\"height:10px\"><\/div>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"eb\">Eclipsing binaries<\/h1>\n\n\n\n<p><strong>Surface brightness-colour relations of dwarf stars from detached eclipsing binaries: II. Extension of the calibrating sample<\/strong><br><em>D. Graczyk, G. Pietrzy\u0144ski, C. Galan, N. Miller, W. Gieren, B. Zgirski, G. Hajdu, M. Ka\u0142uszy\u0144ski, R. Chini, A. Gallenne, M. G\u00f3rski, P. Karczmarek, P. Kervella, M. Kicia, P.F.L. Maxted, N. Nardetto, W. Narloch, B. Pilecki, W. Pych, G. Rojas Garc\u00eda, \u2026<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2025A%26A...694A..65G\/abstract\">2025, A&amp;A, 694A, 65<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: High-precision orbital parallax and masses of eclipsing binaries from infrared interferometry<\/strong><br><em>A. Gallenne, G. Pietrzy\u0144ski, D. Graczyk, B. Pilecki, J. Storm, N. Nardetto, M. Taormina, W. Gieren, A. Tkachenko, P. Kervella, A. M\u00e9rand, M. Weber<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2019A%26A...632A..31G\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2019, A&amp;A, 632, 31<\/a><\/p>\n\n\n\n<p><strong>Testing Systematics of Gaia DR2 Parallaxes with Empirical Surface Brightness: Color Relations Applied to Eclipsing Binaries<\/strong><br><em>D. Graczyk, G. Pietrzy\u0144ski, W. Gieren, J. Storm, N. Nardetto, A. Gallenne, P.F.L. Maxted, P. Kervella,Z. Ko\u0142aczkowski, P. Konorski, B. Pilecki, B. Zgirski, M. G\u00f3rski, K. Suchomska, P. Karczmarek, M. Taormina, P. Wielg\u00f3rski, W. Narloch, R. Smolec, R. Chini, &#8230;<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2019ApJ...872...85G\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2019, ApJ, 872, 85<\/a>&nbsp;&#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2019\/02\/01\/zero-point-shift-of-gaia-dr2-parallaxes\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a><\/p>\n\n\n\n<p><strong>The surface brightness-color relations based on eclipsing binary stars: toward precision better than 1% in angular diameter predictions<\/strong><br><em>D. Graczyk, P. Konorski, G. Pietrzy\u0144ski, W. Gieren, J. Storm, N. Nardetto, A. Gallenne, P. F. L. Maxted, P. Kervella, Z. Ko\u0142aczkowski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2017ApJ...837....7G\" target=\"_blank\" rel=\"noreferrer noopener\">2017, ApJ, 837, 7<\/a><\/p>\n\n\n\n<p><strong>A solar twin in the eclipsing binary LL Aquarii<\/strong><br><em>D. Graczyk, R. Smolec, K. Pavlovski, J. Southworth, G. Pietrzy\u0144ski, P. F. L. Maxted, P. Konorski, W. Gieren, B. Pilecki, M. Taormina, K. Suchomska, P. Karczmarek, M. G\u00f3rski, P. Wielg\u00f3rski, R.I. Anderson<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2016A&amp;A...594A..92G\" target=\"_blank\" rel=\"noreferrer noopener\">2016, A&amp;A, 594, 92<\/a> &#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2018\/02\/17\/ll-aqr\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: High-precision orbital parallax and masses of the eclipsing binary TZ Fornacis<\/strong><br><em>A. Gallenne, G. Pietrzy\u0144ski, D. Graczyk, P. Konorski, P. Kervella, A. Me\u0301rand, W. Gieren, R. I. Anderson, S. Villanova<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2016A%26A...586A..35G\" target=\"_blank\" rel=\"noreferrer noopener\">2016, A&amp;A, 586, A35<\/a><\/p>\n\n\n\n<p><strong>The Araucaria project. Precise physical parameters of the eclipsing binary IO Aquarii<\/strong><br><em>D. Graczyk, P.F.L. Maxted, G. Pietrzy\u0144ski, B. Pilecki, P. Konorski, W. Gieren, J. Storm, A. Gallenne, R.I. Anderson, K. Suchomska, R.G. West, D. Pollacco, F. Faedi, G. Pojma\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2015A&amp;A...581A.106G\" target=\"_blank\" rel=\"noreferrer noopener\">2015, A&amp;A, 581, 106<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project. OGLE-LMC-CEP-1718: An Exotic Eclipsing Binary System Composed of Two Classical Overtone Cepheids in a 413 Day Orbit<\/strong><br><em>W. Gieren, B. Pilecki, G. Pietrzy\u0144ski, D. Graczyk, I. Thompson, I. Soszy\u0144ski, P. Konorski, R. Smolec, A. Udalski, N. Nardetto, G. Bono, P. Prada Moroni, J. Storm, A. Gallenne<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2014ApJ...786...80G\" target=\"_blank\" rel=\"noreferrer noopener\">2014, ApJ, 786, 80<\/a>&nbsp;&#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2014\/05\/01\/binary-system-of-two-cepheids\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: the Baade-Wesselink projection factor of pulsating stars and interferometric contribution to the eclipsing binaries technique of distance determination<\/strong><br><em>N. Nardetto. M. Challouf, G. Guiglion, D. Mourard, W. Gieren, G. Pietrzy\u0144ski. D. Graczyk<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2013IAUS..289..179N\" target=\"_blank\" rel=\"noreferrer noopener\">2013, IAUS, 289, 179<\/a><\/p>\n\n\n\n<div class=\"su-divider su-divider-style-default\" style=\"margin:16px 0;border-width:1px;border-color:#275b12\"><a href=\"#\" style=\"color:#275b12\">Go to top<\/a><\/div>\n\n\n\n<div class=\"su-spacer\" style=\"height:10px\"><\/div>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"sb\">Spectroscopic binaries<\/h1>\n\n\n\n<p><strong>The Araucaria project: High-precision orbital parallaxes and masses of binary stars. I. VLTI\/GRAVITY observations of ten double-lined spectroscopic binaries<\/strong><br><em>A. Gallenne, A. M\u00e9rand, A. P. Kervella, D. Graczyk, G. Pietrzy\u0144ski, W. Gieren, B. Pilecki<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2023arXiv230212960G\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2023, A&amp;A, 672A, 119<\/a><\/p>\n\n\n\n<div class=\"su-divider su-divider-style-default\" style=\"margin:16px 0;border-width:1px;border-color:#275b12\"><a href=\"#\" style=\"color:#275b12\">Go to top<\/a><\/div>\n\n\n\n<div class=\"su-spacer\" style=\"height:10px\"><\/div>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"sg\">Supergiants<\/h1>\n\n\n\n<p><strong>Long-period maser-bearing Miras in the Galactic center. Period-luminosity relations and extinction estimates<\/strong><br><em>M. Lewis, R. Bhattacharya, L.O. Sjouwerman, Y.M. Pihlstr\u00f6m, G. Pietrzy\u0144ski, R. Sahai, P. Karczmarek, M. G\u00f3rski<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2023A%26A...677A.153L\/abstract\">2023, A&amp;A, 677, 153<\/a><\/p>\n\n\n\n<p><strong>Metallicity estimates of young clusters in the Magellanic Clouds from Str\u00f6mgren photometry of supergiant stars<\/strong><br><em>A.E. Piatti, G. Pietrzy\u0144ski, W. Narloch, M. G\u00f3rski, D. Graczyk<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2019MNRAS.483.4766P\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2019, MNRAS, 483, 4766<\/a><\/p>\n\n\n\n<p><strong>LMC Blue Supergiant Stars and the Calibration of the Flux-weighted Gravity-Luminosity Relationship<\/strong><br><em>M.A. Urbaneja, R.-P. Kudritzki, W. Gieren, G. Pietrzy\u0144ski, F. Bresolin, N. Przybilla<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2017AJ....154..102U\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2017, AJ, 154, 102<\/a><\/p>\n\n\n\n<p><strong>Physical properties of the first spectroscopically confirmed red supergiant stars in the Sculptor Group galaxy NGC 55<\/strong><br><em>L.R. Patrick, C.J. Evans, B. Davies, R.-P. Kudritzki, A.M.N. Ferguson, M. Bergemann, G. Pietrzy\u0144ski, O. Turner<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2017MNRAS.468..492P\" target=\"_blank\" rel=\"noreferrer noopener\">2017, MNRAS, 468, 492<\/a><\/p>\n\n\n\n<p><strong>A Spectroscopic Study of Blue Supergiant Stars in the Sculptor Galaxy NGC 55: Chemical Evolution and Distance<\/strong><br><em>R.-P. Kudritzki, N. Castro, M. A. Urbaneja, I.-T. Ho, F. Bresolin, W. Gieren, G. Pietrzy\u0144ski, N. Przybilla<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2016ApJ...829...70K\" target=\"_blank\" rel=\"noreferrer noopener\">2016, ApJ, 829, 70K<\/a><\/p>\n\n\n\n<p><strong>Quantitative Spectroscopy of Blue Supergiants in Metal-poor Dwarf Galaxy NGC 3109<\/strong><br><em>M. Hosek, R.-P. Kudritzki, F. Bresolin, M. Urbaneja, C. Evans, G. Pietrzy\u0144ski, W. Gieren, N. Przybilla, G. Carraro<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2014ApJ...785..151H\" target=\"_blank\" rel=\"noreferrer noopener\">2014, ApJ, 785, 151<\/a><\/p>\n\n\n\n<p><strong>A precise and accurate distance to the Large Magellanic Cloud from late-type eclipsing-binary systems<\/strong><br><em>G. Pietrzy\u0144ski, W. Gieren, D. Graczyk, I.-B. Thompson, B. Pilecki, N. Nardetto, R.-P. Kudritzki, F. Bresolin, G. Bono, P.P. Moroni, P. Konorski, M. G\u00f3rski, J. Storm, R. Smolec, P. Karczmarek<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2013IAUS..289..169P\" target=\"_blank\" rel=\"noreferrer noopener\">2013, IAUS, 289, 169<\/a><\/p>\n\n\n\n<p><strong>The ARAUCARIA project: Grid-based quantitative spectroscopic study of massive blue stars in NGC 55<\/strong><br><em>N. Castro, M. Urbaneja, A. Herrero, M. Garcia, S. Sim\u00f3n-D&#8217;\u0131az, F. Bresolin, G. Pietrzy\u0144ski, R.-P. Kudritzki, W. Gieren<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2012A%26A...542A..79C\" target=\"_blank\" rel=\"noreferrer noopener\">2012, A&amp;A, 542, A79<\/a><\/p>\n\n\n\n<p><strong>Quantitative Spectroscopy of Blue Supergiant Stars in the Disk of M81: Metallicity, Metallicity Gradient, and Distance<\/strong><br><em>R.-P. Kudritzki, M. Urbaneja, Z. Gazak, F. Bresolin, N. Przybilla, W. Gieren, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2012ApJ...747...15K\" target=\"_blank\" rel=\"noreferrer noopener\">2012, ApJ, 747, 15<\/a><\/p>\n\n\n\n<p><strong>Quantitative Study of Blue Stars in NGC 55<\/strong><br><em>N. Castro, A. Herrero, M.A. Urbaneja, M. Garc\u00eda, S. Sim\u00f3n-D\u00edaz, F. Bresolin, G. Pietrzy\u0144ski, R.-P. Kudritzki, W. Gieren<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2012ASPC..465..267C\" target=\"_blank\" rel=\"noreferrer noopener\">2012, ASPC, 465, 267<\/a><\/p>\n\n\n\n<p><strong>Blue Massive Stars in NGC 55: A First Quantitative Study<\/strong><br><em>N. Castro, A. Herrero, M. Garcia, C. Trundle, F. Bresolin, W. Gieren, G. Pietrzy\u0144ski, R.-P. Kudritzki, R. Demarco<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2010hsa5.conf..269C\" target=\"_blank\" rel=\"noreferrer noopener\">2010, Highlights of Spanish Astrophysics, 269<\/a><\/p>\n\n\n\n<p><strong>A New Distance to M33 Using Blue Supergiants and the FGLR Method<\/strong><br><em>U, Vivian, M. Urbaneja, R.-P. Kudritzki, B. Jacobs, F. Bresolin, N. Przybilla<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2009ApJ...704.1120U\" target=\"_blank\" rel=\"noreferrer noopener\">2009, ApJ, 704, 1120<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: The Local Group Galaxy WLM-Distance and Metallicity from Quantitative Spectroscopy of Blue Supergiants<\/strong><br><em>M. Urbaneja, R.-P. Kudritzki, F. Bresolin, N. Przybilla, W. Gieren, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2008ApJ...684..118U\" target=\"_blank\" rel=\"noreferrer noopener\">2008, ApJ, 684, 118<\/a><\/p>\n\n\n\n<p><strong>Quantitative Spectroscopy of 24 A Supergiants in the Sculptor Galaxy NGC 300: Flux-weighted Gravity-Luminosity Relationship, Metallicity, and Metallicity Gradient<\/strong><br><em>R.-P. Kudritzki, M. Urbaneja, F. Bresolin, N. Przybilla, W. Gieren, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2008ApJ...681..269K\" target=\"_blank\" rel=\"noreferrer noopener\">2008, ApJ, 681, 269<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: VLT-spectroscopy of blue massive stars in NGC 55<\/strong><br><em>N. Castro, A. Herrero, M. Garcia, C. Trundle, F. Bresolin, W. Gieren, G. Pietrzy\u0144ski, R.-P. Kudritzki, R. Demarco<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2008A%26A...485...41C\" target=\"_blank\" rel=\"noreferrer noopener\">2008, A&amp;A, 485, 41<\/a><\/p>\n\n\n\n<p><strong>VLT Spectroscopy of Blue Supergiants in IC 1613<\/strong><br><em>F. Bresolin, M. Urbaneja, W. Gieren, G. Pietrzy\u0144ski, R.-P. Kudritzki<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2007ApJ...671.2028B\" target=\"_blank\" rel=\"noreferrer noopener\">2007, ApJ, 671, 2028<\/a><\/p>\n\n\n\n<p><strong>The ARAUCARIA Project: VLT-FORS Spectroscopy of Blue Supergiants in NGC 3109-Classifications, First Abundances, and Kinematics<\/strong><br><em>C. Evans, F. Bresolin, M. Urbaneja, G. Pietrzy\u0144ski, W. Gieren, R.-P. Kudritzki<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2007ApJ...659.1198E\" target=\"_blank\" rel=\"noreferrer noopener\">2007, ApJ, 659, 1198<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: VLT Spectra of Blue Supergiants in WLM- Classification and First Abundances<\/strong><br><em>F. Bresolin, G. Pietrzy\u0144ski, M. Urbaneja, W. Gieren, R.-P. Kudritzki, K. Venn<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2006ApJ...648.1007B\" target=\"_blank\" rel=\"noreferrer noopener\">2006, ApJ, 648, 1007<\/a><\/p>\n\n\n\n<p><strong>On the \u03b1-Element Abundance Gradients in the Disk of the Sculptor Spiral Galaxy NGC 300<\/strong><br><em>M. Urbaneja, A. Herrero, F. Bresolin, R.-P. Kudritzki, W. Gieren, J. Puls, N. Przybilla, F. Najarro, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2005ApJ...622..862U\" target=\"_blank\" rel=\"noreferrer noopener\">2005, ApJ, 622, 862<\/a><\/p>\n\n\n\n<p><strong>Revealing the nature of double-periodic blue variables in the Magellanic Clouds<\/strong><br><em>R. Mennickent, L. Cidale, M. D&#8217;\u0131az, G. Pietrzy\u0144ski, W. Gieren, B. Sabogal<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2005MNRAS.357.1219M\" target=\"_blank\" rel=\"noreferrer noopener\">2005, MNRAS, 357, 1219<\/a><\/p>\n\n\n\n<p><strong>On the Photometric Variability of Blue Supergiants in NGC 300 and Its Impact on the Flux-weighted Gravity-Luminosity Relationship<\/strong><br><em>F. Bresolin, G. Pietrzy\u0144ski, W. Gieren, R.-P. Kudritzki, N. Przybilla, P. Fouqu\u00e9<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2004ApJ...600..182B\" target=\"_blank\" rel=\"noreferrer noopener\">2004, ApJ, 600, 182<\/a><\/p>\n\n\n\n<p><strong>Spectroscopy of Blue Supergiants in the Spiral Galaxy NGC 300<\/strong><br><em>F. Bresolin, W. Gieren, R.-P. Kudritzki, G. Pietrzy\u0144ski, N. Przybilla<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2002ApJ...567..277B\" target=\"_blank\" rel=\"noreferrer noopener\">2002, ApJ, 567, 277<\/a><\/p>\n\n\n\n<p><strong><strong>Identification and Study of Blue Supergiants in Nearby Galaxies<\/strong><br><\/strong><em>F. Bresolin, W. Gieren, G. Pietrzy\u0144ski, R.-P. Kudritzki, N. Przybilla, R.H. <em>M\u00e9ndez<\/em><\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2002sdef.conf..184B\" target=\"_blank\" rel=\"noreferrer noopener\">2002, Proceedings of the ESO Workshop, 184<\/a><\/p>\n\n\n\n<p><strong>Quantitative Spectroscopy of Blue Supergiants beyond the Local Group: NGC 3621 and NGC 300<\/strong><br><em>N. Przybilla, F. Bresolin, R.-P. Kudritzki, W. Gieren, G. Pietrzy\u0144ski, R.H. M\u00e9ndez<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2001AGM....18S0219P\" target=\"_blank\" rel=\"noreferrer noopener\">2001, Astronomische Gesellschaft Meeting Abstracts, 18, 219<\/a><\/p>\n\n\n\n<div class=\"su-divider su-divider-style-default\" style=\"margin:16px 0;border-width:1px;border-color:#275b12\"><a href=\"#\" style=\"color:#275b12\">Go to top<\/a><\/div>\n\n\n\n<div class=\"su-spacer\" style=\"height:10px\"><\/div>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"ccep\">Classical Cepheids<\/h1>\n\n\n\n<p><strong>Versatile light curve templates of Cepheids: Multi-band fitting of photometric time series<\/strong><br><em>G. Bras, P. Kervella, A. M\u00e9rand, A. Afanasiev, V. Hocd\u00e9, N. Nardetto, A. Gallenne, G. Pietrzy\u0144ski, M. Bailleul, W. Kiviaho<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2025A%26A...698A..97B\/abstract\">2025, A&amp;A, 698A, 97<\/a><\/p>\n\n\n\n<p><strong>Surface brightness\u2013colour relations of Cepheids calibrated by optical interferometry<\/strong><br><em>M.C. Bailleul, N. Nardetto, V. Hocd\u00e9, P. Kervella, W. Gieren, J. Storm, G. Pietrzy\u0144ski, A. Gallenne, A. M\u00e9rand, G.  Bras, A. Recio Blanco, P. de Laverny, P.A. Palicio, A. Afanasiev, W. Kiviaho<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2025A%26A...698A..46B\/abstract\">2025, A&amp;A, 698A, 46<\/a><\/p>\n\n\n\n<p><strong>Circumstellar emission of Cepheids across the instability strip: Mid-infrared observations with VLTI\/MATISSE<\/strong><br><em>V. Hocd\u00e9, A. Matter, N. Nardetto, A. Gallenne,  P. Kervella, A. M\u00e9rand, G. Pietrzy\u0144ski, W. Gieren, J. Leftley, S. Robbe-Dubois, B. Lopez, M.C. Bailleul, G. Bras, R. Smolec, P. Wielg\u00f3rski, G. Hajdu, A. Afanasiev<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2025A%26A...694A.101H\/abstract\">2025, A&amp;A, 694A, 101<\/a><\/p>\n\n\n\n<p><strong>Discovery of ionized circumstellar gas emission around the long-period Cepheid \u2113 Carinae with ALMA<\/strong><br><em>V. Hocd\u00e9, T. Kami\u0144ski, M. Lewis, N. Nardetto, P. Kervella, G. Pietrzy\u0144ski<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2025A%26A...694L..15H\/abstract\">2025, A&amp;A, 694L, 15H<\/a><\/p>\n\n\n\n<p><strong>Multiplicity of Galactic Cepheids from long-baseline interferometry: V. High-accuracy orbital parallax and mass of SU Cygni<\/strong><br><em>A. Gallenne, N.R. Evans, P. Kervella, J.D. Monnier, C.R. Proffitt, G.H. Schaefer, E.M. Winston, J. Kuraszkiewicz, A. M\u00e9rand, G. Pietrzy\u0144ski, W. Gieren, B. Pilecki, S. Kraus, J.-B. Le Bouquin, N. Anugu, T. ten Brummelaar, S. Chhabra, I. Codron, C.L. Davies, J. Ennis, \u2026<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2025A%26A...693A.111G\/abstract\">2025, A&amp;A, 693A, 111G<\/a><\/p>\n\n\n\n<p><strong>The orbital parameters of the \u03b4 Cep inner binary system determined using 2019 HARPS-N spectroscopic data<\/strong><br><em>N. Nardetto, V. Hocd\u00e9, P. Kervella, A. Gallenne, W. Gieren, D. Graczyk, A. Merand, M. Rainer, J. Storm, G. Pietrzy\u0144ski, B. Pilecki, E. Poretti, M. Bailleul, G. Bras, A. Afanasiev<br><\/em><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2024A%26A...684L...9N\/abstract\">2024, A&amp;A 684L, 9<\/a><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2024A%26A...685C...3N\/abstract\">Corrigendum<\/a><\/p>\n\n\n\n<p><strong>Cepheids with giant companions. II. Spectroscopic confirmation of nine new double-lined binary systems composed of two Cepheids<\/strong><br><em>B. Pilecki, I.B. Thompson, F. Espinoza-Arancibia, G. Hajdu, W. Gieren, M. Taormina, G. Pietrzy\u0144ski, W. Narloch, G. Bono, A. Gallenne, P. Kervella, P. Wielg\u00f3rski, B. Zgirski, D. Graczyk, P. Karczmarek, N.R. Evans<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2024arXiv240312390P\/abstract\">2024, A&amp;A 686A, 263<\/a><\/p>\n\n\n\n<p><strong>Period-Luminosity Relations for Galactic Classical Cepheids in the Sloan Bands<\/strong><br><em>W. Narloch, G. Hajdu, G. Pietrzy\u0144ski, W. Gieren, P. Wielg\u00f3rski, B. Zgirski, P. Karczmarek, M. G\u00f3rski, D. Graczyk<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2023ApJ...953...14N\/abstract\">2023, ApJ, 953, 14<\/a><\/p>\n\n\n\n<p><strong>Synthetic Population of Binary Cepheids. II. The effect of companion light on the extragalactic distance scale<\/strong><br><em>P. Karczmarek, G. Hajdu, G. Pietrzy\u0144ski, W. Gieren, W. Narloch, R. Smolec, G. Wiktorowicz, K. Belczynski<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2023ApJ...950..182K\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2023, ApJ 950, 182<\/a><\/p>\n\n\n\n<p><strong>HARPS-N high spectral resolution observations of Cepheids II. The impact of the surface-brightness color relation on the Baade-Wesselink projection factor of eta Aql<\/strong><br><em>N. Nardetto, W. Gieren, J. Storm, V. Hocde, G. Pietrzy\u0144ski, P. Kervella, A. Merand, A. Gallenne, D. Graczyk, B. Pilecki, E. Poretti, M. Rainer, B. Zgirski, P. Wielg\u00f3rski, G. Hajdu, M. G\u00f3rski, P. Karczmarek, W. Narloch, M. Taormina<br><\/em><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2023arXiv230109468N\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2023, A&amp;A, 671A, 14<\/a><\/p>\n\n\n\n<p><strong>Metallicity estimations of MW, SMC, and LMC classical Cepheids from the shape of the V- and I-band light curves<\/strong><br><em>V. Hocd\u00e9, R. Smolec, P. Moskalik, O. Zi\u00f3\u0142kowska, R. Singh Rathour<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2023A%26A...671A.157H\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2023, A&amp;A 671, A157<\/a><\/p>\n\n\n\n<p><strong>Discovery of a Binary-origin Classical Cepheid in a Binary System with a 59 day Orbital Period<\/strong><br><em>B. Pilecki, I.B. Thompson, F. Espinoza-Arancibia, R.I. Anderson, W. Gieren, W. Narloch, J. Minniti, G. Pietrzy\u0144ski, M. Taormina, G. Bono, G. Hajdu<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2022ApJ...940L..48P\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2022, ApJL 940, 48<\/a><\/p>\n\n\n\n<p><strong>Synthetic Population of Binary Cepheids. I. The Effect of Metallicity and Initial Parameter Distribution on Characteristics of Cepheids&#8217; Companions<\/strong><br>P. <em>Karczmarek, R. Smolec, G. Hajdu, G. Pietrzy\u0144ski, W. Gieren, W. Narloch,  G. Wiktorowicz, K. Belczynski<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2022ApJ...930...65K\/abstract\">2022, ApJ, 930, 65<\/a><\/p>\n\n\n\n<p><strong>Mid-infrared circumstellar emission of the long-period Cepheid \u2113 Carinae resolved with VLTI\/MATISSE<br><\/strong><em>V. Hocd\u00e9, N. Nardetto, A. Matter, E. Lagadec, A. M\u00e9rand, P. Cruzal\u00e8bes, A. Meilland, F. Millour, B. Lopez, P. Berio, G. Weigelt, R. Petrov, J.W. Isbell, W. Jaffe, P. Kervella, A. Glindemann, M. Sch\u00f6ller, F. Allouche, A. Gallenne, A. Domiciano de Souza, \u2026<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2021A%26A...651A..92H\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2021, A&amp;A 651, A92<\/a><\/p>\n\n\n\n<p><strong>IR Excess of Classical Cepheids Modeled by a Thin Shell of Ionized Gas<\/strong><br><em>V. Hocd\u00e9, N. Nardetto, E. Lagadec, G. Niccolini, A. Domiciano de Souza, A. Merand, P. Kervella<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2021ASPC..529..271H\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2021, ASPC 529, 271<\/a><\/p>\n\n\n\n<p><strong>Extended envelopes around Galactic Cepheids. V. Multi-wavelength and time-dependent analysis of IR excess<\/strong><br>A. <em>Gallenne, A. M\u00e9rand, P. Kervella, G. Pietrzy\u0144ski, W. Gieren, V. Hocd\u00e9, L. Breuval, N. Nardetto, E. Lagadec<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2021A&amp;A...651A.113G\/abstract\">2021, A&amp;A, 651, A113<\/a><\/p>\n\n\n\n<p><strong>The Influence of Metallicity on the Leavitt Law from Geometrical Distances of Milky Way and Magellanic Cloud Cepheids<\/strong><br><em>L. Breuval, P. Kervella, P. Wielg\u00f3rski, W. Gieren, D. Graczyk, B. Trahin, G. Pietrzy\u0144ski, F. Arenou, B. Javanmardi, B. Zgirski<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2021ApJ...913...38B\/abstract\">2021, ApJ, 913, 38<\/a><\/p>\n\n\n\n<p><strong>Cepheids with Giant Companions. I. Revealing a Numerous Population of Double-lined Binary Cepheids<\/strong><br><em>B. Pilecki, G. Pietrzy\u0144ski, R.I. Anderson, W. Gieren, M. Taormina, W. Narloch, N.R. Evans, J. Storm<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2021ApJ...910..118P\/abstract\">2021, ApJ, 910, 118<\/a><\/p>\n\n\n\n<p><strong>The impact of binary Cepheids on the distance determinations<\/strong><br><em>P. Karczmarek, G. Wiktorowicz, G. Pietrzy\u0144ski, K. Belczy\u0144ski<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2020past.conf...40K\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2020, Proceedings of the Polish Astronomical Society, 10, 40<\/a><\/p>\n\n\n\n<p><strong>The Milky Way Cepheid Leavitt law based on Gaia DR2 parallaxes of companion stars and host open cluster populations<\/strong><br><em>L. Breuval, P. Kervella, R.I. Anderson, A.G. Riess, F. Arenou, B. Trahin, A. M\u00e9rand, A. Gallenne, W. Gieren, G. Pietrzy\u0144ski, N. Nardetto, B. Javanmardi, V. Hocd\u00e9<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2020A%26A...643A.115B\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2020, A&amp;A, 643, A115<\/a><\/p>\n\n\n\n<p><strong>Pulsating chromosphere of classical Cepheids. Calcium infrared triplet and H\u03b1 profile variations<br><\/strong><em>V. Hocd\u00e9, N. Nardetto, S. Borgniet, E. Lagadec, P. Kervella, A. M\u00e9rand, N. Evans, D. Gillet, Ph. Mathias, A. Chiavassa, A. Gallenne, L. Breuval, B. Javanmardi<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2020A%26A...641A..74H\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2020, A&amp;A 641, A74<\/a><\/p>\n\n\n\n<p><strong>A thin shell of ionized gas as the explanation for infrared excess among classical Cepheids<br><\/strong><em>V. Hocd\u00e9, N. Nardetto, E. Lagadec, G. Niccolini, A. Domiciano de Souza, A. M\u00e9rand, P. Kervella, A. Gallenne, M. Marengo, B. Trahin, W. Gieren, G. Pietrzy\u0144ski, S. Borgniet, L. Breuval, B. Javanmardi<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2020A%26A...633A..47H\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2020, A&amp;A, 633, 47<\/a><\/p>\n\n\n\n<p><strong>Consistent radial velocities of classical Cepheids from the cross-correlation technique<\/strong><br><em>S. Borgniet, P. Kervella, N. Nardetto, A. Gallenne, A. M\u00e9rand, R.I. Anderson, J. Aufdenberg, L. Breuval, W. Gieren, V. Hocd\u00e9, B. Javanmardi, E. Lagadec, G. Pietrzy\u0144ski, B. Trahin<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2019A%26A...631A..37B\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2019, A&amp;A, 631, 37<\/a><\/p>\n\n\n\n<p><strong>Multiplicity of Galactic Cepheids and RR Lyrae stars from Gaia DR2. I. Binarity from proper motion anomaly<\/strong><br><em>P. Kervella, A. Gallenne, N.R. Nancy, L. Szabados, F. Arenou, A. M\u00e9rand, Y. Proto, P. Karczmarek, N. Nardetto, W. Gieren, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2019A%26A...623A.116K\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2019, A&amp;A, 623A, 116<\/a><\/p>\n\n\n\n<p><strong>Multiplicity of Galactic Cepheids and RR Lyrae stars from Gaia DR2. II. Resolved common proper motion pairs<\/strong><br><em>P. Kervella, A. Gallenne, N.R. Evans, L. Szabados, F. Arenou, A. M\u00e9rand, N. Nardetto, W. Gieren, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2019A%26A...623A.117K\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2019, A&amp;A, 623A, 117<\/a><\/p>\n\n\n\n<p><strong>Multiplicity of Galactic Cepheids from long-baseline interferometry. IV. New detected companions from MIRC and PIONIER observations<\/strong><br><em>A. Gallenne, P. Kervella, S. Borgniet, A. M\u00e9rand, G. Pietrzy\u0144ski, W. Gieren, J.D. Monnier, G.H. Schaefer, N.R. Evans, R.I. Anderson, F. Baron, R.M. Roettenbacher, P. Karczmarek<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2019A%26A...622A.164G\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2019, A&amp;A, 622A, 164<\/a><\/p>\n\n\n\n<p><strong>The effect of metallicity on Cepheid period-luminosity relations from a Baade-Wesselink analysis of Cepheids in the Milky Way and Magellanic Clouds<\/strong><br><em>W. Gieren, J. Storm, P. Konorski, M. G\u00f3rski, B. Pilecki, I.B. Thompson, G. Pietrzy\u0144ski, D. Graczyk, T.G. Barnes, P. Fouqu\u00e9, N. Nardetto, A. Gallenne, P. Karczmarek, K. Suchomska, P. Wielg\u00f3rski, M. Taormina, B. Zgirski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2018A&amp;A...620A..99G\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2018, A&amp;A, 620, 99<\/a>&nbsp;&#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2018\/09\/11\/the-effect-of-metallicity-on-cepheid-period-luminosity-relations\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a><\/p>\n\n\n\n<p><strong>A Geometrical 1% Distance to the Short-period Binary Cepheid V1334 Cygni<\/strong><br><em>A. Gallenne, P. Kervella, N.R. Evans, C.R. Proffitt, J.D. Monnier, A. M\u00e9rand, E. Nelan, E. Winston, G. Pietrzy\u0144ski, G. Schaefer, W. Gieren, R.I. Anderson, S. Borgniet, S. Kraus, R.M. Roettenbacher, F. Baron, B. Pilecki, M. Taormina, D. Graczyk, N. Mowlavi, &#8230;<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2018ApJ...867..121G\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2018, ApJ, 876, 121<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project. The Distance to the Sculptor Group Galaxy NGC 7793 from Near-Infrared Photometry of Cepheid Variables<\/strong><br><em>B. Zgirski, W. Gieren, G. Pietrzy\u0144ski, P. Karczmarek, M. G\u00f3rski, P. Wielg\u00f3rski, W. Narloch, D. Graczyk, P.-R. Kudritzki, F. Bresolin<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2018pas6.conf..329Z\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2018, Proceedings of the Polish Astronomical Society, 6, 329<\/a><\/p>\n\n\n\n<p><strong>The Metallicity Effect on Cepheid Absolute Magnitudes<\/strong><br><em>P. Wielg\u00f3rski, G. Pietrzy\u0144ski, W. Gieren, M. G\u00f3rski, R.-P. Kudritzki, B. Zgirski, F. Bresolin, J. Storm, N. Matsunaga, D. Graczyk, I. Soszy\u0144ski<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2018pas6.conf..327W\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\">2018, Proceedings of the Polish Astronomical Society, 6, 327<\/a><\/p>\n\n\n\n<p><strong>Toward a Universal Period-p-factor Relation<\/strong><br><em>A. Gallenne, P. Kervella, A. M\u00e9rand G. Pietrzy\u0144ski, W. Gieren, N. Nardetto<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2018pas6.conf..290G\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2018, Proceedings of the Polish Astronomical Society, 6, 290<\/a><\/p>\n\n\n\n<p><strong>Classical Pulsators in Eclipsing Binary Systems<\/strong><br><em>G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2018pas6.conf..229P\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2018, Proceedings of the Polish Astronomical Society, 6, 229<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: High-precision Cepheid Astrophysics from the Analysis of Variables in Double-lined Eclipsing Binaries<\/strong><br><em>B. Pilecki, W. Gieren, G. Pietrzy\u0144ski, I.B. Thompson, R. Smolec, D. Graczyk, M. Taormina, A. Udalski, J. Storm, N. Nardetto, A. Gallenne, P. Kervella, I. Soszy\u0144ski, M. G\u00f3rski, P. Wielg\u00f3rski, K. Suchomska, P. Karczmarek, B. Zgirski<br><\/em><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2018ApJ...862...43P\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2018, ApJ, 862, 43<\/a>&nbsp;&#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2018\/07\/10\/astrophysics-of-cepheids-in-eclipsing-binary-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a><\/p>\n\n\n\n<p><strong>Optical interferometry and Gaia parallaxes for a robust calibration of the Cepheid distance scale <\/strong><br><em>P. Kervella, A. M\u00e9rand, A. Gallenne, B. Trahin, S. Borgniet, G. Pietrzy\u0144ski, N. Nardetto, W. Gieren<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2018IAUS..330..305K\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2018, IAUS, 330, 305<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project. The Distance to the Sculptor Group Galaxy NGC 7793 from Near-infrared Photometry of Cepheid Variables<\/strong><br><em>B. Zgirski, W. Gieren, G. Pietrzy\u0144ski, P. Karczmarek, M. G\u00f3rski, P. Wielg\u00f3rski, W. Narloch, D. Graczyk, R.-P. Kudritzki, F. Bresolin<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2017ApJ...847...88Z\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2017, ApJ, 847, 88<\/a><\/p>\n\n\n\n<p><strong>A Precision Determination of the Effect of Metallicity on Cepheid Absolute Magnitudes in VIJHK Bands from Magellanic Cloud Cepheids<\/strong><br><em>P. Wielg\u00f3rski, G. Pietrzy\u0144ski, W. Gieren, M. G\u00f3rski, R.-P. Kudritzki, B. Zgirski, F. Bresolin, J. Storm, N. Matsunaga, D. Graczyk, I. Soszy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2017ApJ...842..116W\" target=\"_blank\" rel=\"noreferrer noopener\">2017, ApJ, 842, 116<\/a><\/p>\n\n\n\n<p><strong>HARPS-N high spectral resolution observations of Cepheids I. The Baade-Wesselink projection factor of delta-Cep revisited<\/strong><br><em>N. Nardetto, E. Poretti, M. Rainer, A. Fokin, P. Mathias, R.I. Anderson, A. Gallenne, W. Gieren, D. Graczyk, P. Kervella, A. Me\u0301rand, D. Mourard, H. Neilson, G. Pietrzy\u0144ski, B. Pilecki, J. Storm<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2017A&amp;A...597A..73N\" target=\"_blank\" rel=\"noreferrer noopener\">2017, A&amp;A, 597, A73<\/a><\/p>\n\n\n\n<p><strong>Observational calibration of the projection factor of Cepheids. IV. Period-projection factor relation of Galactic and Magellanic Cloud Cepheids<\/strong><br><em>A. Gallenne, P. Kervella, A. M\u00e9rand, G. Pietrzy\u0144ski, W. Gieren, N. Nardetto, B. Trahin<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2017arXiv170809851G\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2017, A&amp;A, 608A, 18<\/a><\/p>\n\n\n\n<p><strong>Observational calibration of the projection factor of Cepheids III. The long-period Galactic Cepheid RS Puppis<\/strong><br><em>P. Kervella, B. Trahin, H. E. Bond, A. Gallenne, L. Szabados, A. Me\u0301rand, J. Breitfelder, J. Dailloux, R. I. Anderson, P. Fouque\u0301, W. Gieren, N. Nardetto, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2017A&amp;A...600A.127K\" target=\"_blank\" rel=\"noreferrer noopener\">2017, A&amp;A,&nbsp;600, 127<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project. The distance to the Sculptor group galaxy NGC 7793 from near-infrared photometry of Cepheid variables<\/strong><br><em>B. Zgirski, W. Gieren, G. Pietrzy\u0144ski, P. Karczmarek, M. G\u00f3rski, D. Graczyk, B. Pilecki, M. Taormina, K.&nbsp;Suchomska, P.&nbsp;Wielg\u00f3rski, P.&nbsp;Konorski<\/em><br><a rel=\"noreferrer noopener\" href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2017EPJWC.15207010Z\/abstract\" target=\"_blank\">2017, EPJ Web of Conferences, 152, 07010<\/a><\/p>\n\n\n\n<p><strong>Cepheids and its dependence on metallicity<\/strong><br><em>P. Wielg\u00f3rski, G. Pietrzy\u0144ski, W. Gieren<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2017EPJWC.15207011W\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2017, EPJ Web of Conferences, 152, 07011<\/a><\/p>\n\n\n\n<p><strong>Multiplicity of Galactic Cepheids from long-baseline interferometry III. Sub-percent limits on the relative brightness of a close companion of delta-Cephei<\/strong><br><em>A. Gallenne, A. Merand, P. Kervella, J. D. Monnier, G. H. Schaefer, R. M. Roettenbacher, W. Gieren, G. Pietrzy\u0144ski, H. McAlister, T. ten Brummelaar, J. Sturmann, L. Sturmann, N. Turner, R.I. Anderson<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2016MNRAS.461.1451G\" target=\"_blank\" rel=\"noreferrer noopener\">2016, MNRAS, 461, 1451<\/a><\/p>\n\n\n\n<p><strong>VEGA\/CHARA interferometric observations of Cepheids. I. A resolved structure around the prototype classical Cepheid delta-Cep in the visible spectral range<\/strong><br><em>N. Nardetto, A. M\u00e9rand, D. Mourard, J. Storm, W. Gieren, P. Fouqu\u00e9, A. Gallenne, D. Graczyk, P. Kervella, H. Neilson, G. Pietrzy\u0144ski, B. Pilecki, J. Breitfelder, P. Berio, M. Challouf, J.-M. Clausse, R. Ligi, P. Mathias, A. Meilland, K. Perraut, &#8230;<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2016A&amp;A...593A..45N\" target=\"_blank\" rel=\"noreferrer noopener\">2016, A&amp;A, 593, A45<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: A study of the classical Cepheid in the eclipsing binary system OGLE LMC562.05.9009 in the Large Magellanic Cloud<\/strong><br><em>W. Gieren, B. Pilecki, G. Pietrzy\u0144ski, D. Graczyk, A. Udalski, I. Soszynski, I.B. Thompson, P.G. Prada Moroni, R. Smolec, P. Konorski, M. G\u00f3rski, P. Karczmarek, K. Suchomoska, M. Taormina, A. Gallenne, J. Storm, B. Giuseppe, M. Catalan, M. Szyma\u0144ski, &#8230;<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2015ApJ...815...28G\" target=\"_blank\" rel=\"noreferrer noopener\">2015, ApJ, 815, 28<\/a> &#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2015\/12\/01\/mass-determination-for-classical-fu-cepheid\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a> &#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/p\/cep9009\" target=\"_blank\" rel=\"noreferrer noopener\">get data<\/a><\/p>\n\n\n\n<p><strong>Robust high-contrast companion detection from interferometric observations. The CANDID algorithm and an application to six binary Cepheids<\/strong><br><em>A. Gallenne, A. Me\u0301rand, P. Kervella, J. D. Monnier, G.H. Schaefer, F. Baron, J. Breitfelder, J.B. Le Bouquin, R.M. Roettenbacher, W. Gieren, G. Pietrzy\u0144ski, H. McAlister, T. ten Brummelaar, J. Sturmann, L. Sturmann, N. Turner, S. Ridgway, S. Kraus<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2015A%26A...579A..68G\" target=\"_blank\" rel=\"noreferrer noopener\">2015, A&amp;A, 579, A68<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: The First-Overtone Classical Cepheid in the Eclipsing System OGLE-LMC-CEP-2532<\/strong><br><em>B. Pilecki, D. Graczyk, W. Gieren, G. Pietrzy\u0144ski, I.B. Thompson, R. Smolec, A. Udalski, I. Soszynski, P. Konorski, M. Taormina, A. Gallenne, D. Minniti, M. Catelan<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2015ApJ...806...29P\" target=\"_blank\" rel=\"noreferrer noopener\">2015, ApJ, 806, 29<\/a> &#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2015\/06\/01\/first-overtone-cepheid-mass-determination\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a> &#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/p\/cep2532\" target=\"_blank\" rel=\"noreferrer noopener\">get data<\/a><\/p>\n\n\n\n<p><strong>New NIR light-curve templates for classical Cepheids<\/strong><br><em>L. Inno, N. Matsunaga, M. Romaniello, G. Bono, A. Monson, I. Ferraro, G. Iannicola, E. Persson, R. Buonanno, W. Freedman, W. Gieren, M. Groenewegen, Y. Ita, C. Laney, B. Lemasle, B. Madore, T. Nagayama, Y. Nakada, M. Nonino, G. Pietrzy\u0144ski, F. Primas, &#8230;<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2015A&amp;A...576A..30I\" target=\"_blank\" rel=\"noreferrer noopener\">2015, A&amp;A, 576, A30<\/a><\/p>\n\n\n\n<p><strong>Searching for visual companions of close Cepheids. VLT\/NACO lucky imaging of Y Oph, FF Aql, X Sgr, W Sgr, and \u03b7 Aql<\/strong><br><em>A. Gallenne, P. Kervella, A. M\u00e9rand, N. Evans, J. Girard, W. Gieren, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2014A&amp;A...567A..60G\" target=\"_blank\" rel=\"noreferrer noopener\">2014, A&amp;A, 567, A60<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project. OGLE-LMC-CEP-1718: An Exotic Eclipsing Binary System Composed of Two Classical Overtone Cepheids in a 413 Day Orbit<\/strong><br><em>W. Gieren, B. Pilecki, G. Pietrzy\u0144ski, D. Graczyk, I. Thompson, I. Soszy\u0144ski, P. Konorski, R. Smolec, A. Udalski, N. Nardetto, G. Bono, P. Prada Moroni, J. Storm, A. Gallenne<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2014ApJ...786...80G\" target=\"_blank\" rel=\"noreferrer noopener\">2014, ApJ, 786, 80<\/a>&nbsp;&#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2014\/05\/01\/binary-system-of-two-cepheids\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a><\/p>\n\n\n\n<p><strong>Multiplicity of Galactic Cepheids from long-baseline interferometry. II. The Companion of AX Circini revealed with VLTI\/PIONIER<\/strong><br><em>A. Gallenne, A. M\u00e9rand, P. Kervella, J. Breitfelder, J.-B. Le Bouquin, J. Monnier, W. Gieren, B. Pilecki, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2014A&amp;A...561L...3G\" target=\"_blank\" rel=\"noreferrer noopener\">2014, A&amp;A, 561, L3<\/a><\/p>\n\n\n\n<p><strong>An interferometric view on binarity and circumstellar envelopes of Cepheids<br><\/strong><em>A. Gallenne, P. Kervella, A. M\u00e9rand, J.-D. Monnier, J. Breitfleder, G. Pietrzy\u0144ski, W. Gieren<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2014IAUS..301..411G\" target=\"_blank\" rel=\"noreferrer noopener\">2014, IAUS, 301, 411<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: the Baade-Wesselink projection factor of pulsating stars<\/strong><br><em>N. Nardetto, J. Storm, W. Gieren, G. Pietrzy\u0144ski, E. Poretti<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2014IAUS..301..145N\" target=\"_blank\" rel=\"noreferrer noopener\">2014, IAUS, 301, 145<\/a><\/p>\n\n\n\n<p><strong>Physical parameters and the projection factor of the classical Cepheid in the binary system OGLE-LMC-CEP-0227<\/strong><br><em>B. Pilecki, D. Graczyk, G. Pietrzy\u0144ski, W. Gieren, I. Thompson, W. Freedman, V. Scowcroft, B. Madore, A. Udalski, I. Soszy\u0144ski, P. Konorski, R. Smolec, N. Nardetto, G. Bono, P. Prada Moroni, J. Storm, A. Gallenne<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2013MNRAS.436..953P\" target=\"_blank\" rel=\"noreferrer noopener\">2013, MNRAS, 436, 953<\/a> &#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2013\/12\/01\/first-dynamical-p-factor-determination\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a> &#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/p\/cep227\" target=\"_blank\" rel=\"noreferrer noopener\">get data<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project. A Distance Determination to the Local Group Spiral M33 from Near-infrared Photometry of Cepheid Variables<\/strong><br><em>W. Gieren, M. G\u00f3rski, G. Pietrzy\u0144ski, P. Konorski, K. Suchomska, D. Graczyk, B. Pilecki, F. Bresolin, R.-P. Kudritzki, J. Storm, P. Karczmarek, A. Gallenne, P. Calder\u00f3n, D. Geisler<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2013ApJ...773...69G\" target=\"_blank\" rel=\"noreferrer noopener\">2013, ApJ, 773, 69<\/a><\/p>\n\n\n\n<p><strong>Variable Stars from the OGLE-III Shallow Survey in the Large Magellanic Cloud<\/strong><br><em>K. Ulaczyk, M. Szyma\u0144ski, A. Udalski, M. Kubiak, G. Pietrzy\u0144ski, I. Soszy\u0144ski, \u0141. Wyrzykowski, R. Poleski, W. Gieren, A. Walker, A. <em>Garc\u00eda-Varela<\/em><\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2013AcA....63..159U\" target=\"_blank\" rel=\"noreferrer noopener\">2013, AcA, 63, 159-179<\/a><\/p>\n\n\n\n<p><strong>The Eclipsing Binary Cepheid OGLE-LMC-CEP-0227 in the Large Magellanic Cloud: Pulsation Modeling of Light and Radial Velocity Curves<\/strong><br><em>M. Marconi, R. Molinaro, G. Bono, G. Pietrzy\u0144ski, W. Gieren, B. Pilecki, R. Stellingwerf, D. Graczyk, R. Smolec, P. Konorski, K. Suchomska, M. G\u00f3rski, P. Karczmarek<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2013ApJ...768L...6M\" target=\"_blank\" rel=\"noreferrer noopener\">2013, ApJ, 768, L6<\/a><\/p>\n\n\n\n<p><strong>Multiplicity of Galactic Cepheids from long-baseline interferometry. I. CHARA\/MIRC detection of the companion of V1334 Cygni<\/strong><br><em>A. Gallenne, J. Monnier, A. M\u00e9rand, P. Kervella, S. Kraus, G. Schaefer, W. Gieren, G. Pietrzy\u0144ski, L. Szabados, X. Che, F. Baron, E. Pedretti, H. McAlister, T. ten Brummelaar, J. Sturmann, L. Sturmann, N. Turner, C. Farrington, N. Vargas<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2013A&amp;A...552A..21G\" target=\"_blank\" rel=\"noreferrer noopener\">2013, A&amp;A, 552, A21<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: the Baade-Wesselink projection factor of pulsating stars and interferometric contribution to the eclipsing binaries technique of distance determination<\/strong><br><em>N. Nardetto. M. Challouf, G. Guiglion, D. Mourard, W. Gieren, G. Pietrzy\u0144ski. D. Graczyk<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2013IAUS..289..179N\" target=\"_blank\" rel=\"noreferrer noopener\">2013, IAUS, 289, 179<\/a><\/p>\n\n\n\n<p><strong>Cepheid distances from the Baade-Wesselink method<\/strong><br><em>W. Gieren, J. Storm, N. Nardetto, A. Gallenne, G. Pietrzy\u0144ski, P. Fouqu\u00e9, T.G. Barnes, D. Majaess<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2013IAUS..289..138G\" target=\"_blank\" rel=\"noreferrer noopener\">2013, IAUS, 289, 138<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project. Binary Classical Cepheids in the LMC<\/strong><br><em>D. Graczyk, B. Pilecki, G. Pietrzy\u0144ski, W. Gieren, P. Konorski, I. Soszy\u0144ski, A. Udalski, A. Gallenne<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2013EAS....64..309G\" target=\"_blank\" rel=\"noreferrer noopener\">2013, EAS, 64, 309<\/a><\/p>\n\n\n\n<p><strong>Binary Cepheids from optical interferometry<\/strong><br><em>A. Gallenne, P. Kervella, A. M\u00e9rand, J.D. Monnier, J. Breitfelder, G. Pietrzy\u0144ski, W. Gieren<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2013EAS....64..197G\" target=\"_blank\" rel=\"noreferrer noopener\">2013, EAS, 64, 197<\/a><\/p>\n\n\n\n<p><strong>On the Evolutionary and Pulsation Mass of Classical Cepheids. III. The Case of the Eclipsing Binary Cepheid CEP0227 in the Large Magellanic Cloud<\/strong><br><em>P. Prada Moroni, M. Gennaro, G. Bono, G. Pietrzy\u0144ski, W. Gieren, B. Pilecki, D. Graczyk, I. Thompson<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2012ApJ...749..108P\" target=\"_blank\" rel=\"noreferrer noopener\">2012, ApJ, 749, 108<\/a><\/p>\n\n\n\n<p><strong>Determining the Cepheid Period-Luminosity Relation Using Distances to Individual Cepheids from the Near-infrared Surface Brightness Method<\/strong><br><em>J. Storm, W. Gieren, P. Fouqu\u00e9, T. Barnes, T. Granzer, N. Nardetto, G. Pietrzy\u0144ski, D. Queloz, I. Soszy\u0144ski, K. Strassmeier, M. Weber<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2012Msngr.147...14S\" target=\"_blank\" rel=\"noreferrer noopener\">2012, Msngr, 147, 14<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: Accurate Determination of the Dynamical Mass of the Classical Cepheid in the Eclipsing System OGLE-LMC-CEP-1812<\/strong><br><em>G. Pietrzy\u0144ski, I. Thompson, D. Graczyk, W. Gieren, B. Pilecki, A. Udalski, I. Soszynski, G. Bono, P. Konorski, N. Nardetto, J. Storm<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2011ApJ...742L..20P\" target=\"_blank\" rel=\"noreferrer noopener\">2011, ApJ, 742, L20<\/a> &#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2011\/12\/01\/dynamical-mass-of-a-cepheid-again\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a><\/p>\n\n\n\n<p><strong>Erratum: &#8220;The Araucaria Project: First Cepheid Distance to the Sculptor Group Galaxy NGC 7793 from Variables Discovered in a Wide-field Imaging Survey&#8221;<\/strong><br><em>G. Pietrzy\u0144ski, W. Gieren, M. Hamuy, G. Pignata, I. Soszy\u0144ski, A. Udalski, A. Walker, P. Fouqu\u00e9, F. Bresolin, R.-P. Kudritzki, A. <em>Garc\u00eda-Varela<\/em>, O. Szewczyk, M. Szyma\u0144ski, M. Kubiak, \u0141. Wyrzykowski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2011AJ....142..178P\" target=\"_blank\" rel=\"noreferrer noopener\">2011, AJ, 142, 178<\/a><\/p>\n\n\n\n<p><strong>Calibrating the Cepheid period-luminosity relation from the infrared surface brightness technique. II. The effect of metallicity and the distance to the LMC<\/strong><br><em>J. Storm, W. Gieren, P. Fouqu\u00e9, T. Barnes, I. Soszy\u0144ski, G. Pietrzy\u0144ski, N. Nardetto, D. Queloz<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2011A%26A...534A..95S\" target=\"_blank\" rel=\"noreferrer noopener\">2011, A&amp;A, 534, A95<\/a><\/p>\n\n\n\n<p><strong>The Baade-Wesselink p-factor applicable to LMC Cepheids<\/strong><br><em>N. Nardetto, A. Fokin, P. Fouqu\u00e9, J. Storm, W. Gieren, G. Pietrzy\u0144ski, D. Mourard, P. Kervella<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2011A%26A...534L..16N\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\">2011, A&amp;A, 534, L16<\/a><\/p>\n\n\n\n<p><strong>Calibrating the Cepheid period-luminosity relation from the infrared surface brightness technique. I. The p-factor, the Milky Way relations, and a universal K-band relation<\/strong><br><em>J. Storm, W. Gieren, P. Fouqu\u00e9, T. Barnes, G. Pietrzy\u0144ski, N. Nardetto, M. Weber, T. Granzer, K. Strassmeier<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2011A%26A...534A..94S\" target=\"_blank\" rel=\"noreferrer noopener\">2011, A&amp;A, 534, A94<\/a><\/p>\n\n\n\n<p><strong>The dynamical mass of a classical Cepheid variable star in an eclipsing binary system<\/strong><br><em>G. Pietrzy\u0144ski, I. Thompson, W. Gieren, D. Graczyk, G. Bono, A. Udalski, I. Soszy\u0144ski, D. Minniti, B. Pilecki<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2010Natur.468..542P\" target=\"_blank\" rel=\"noreferrer noopener\">2010, Nature, 468, 542<\/a>&nbsp;&#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2010\/11\/01\/dynamical-mass-of-a-cepheid\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: First Cepheid Distance to the Sculptor Group Galaxy NGC 7793 from Variables Discovered in a Wide-field Imaging Survey<\/strong><br><em>G. Pietrzy\u0144ski, W. Gieren, M. Hamuy, G. Pignata, I. Soszy\u0144ski, A. Udalski, A. Walker, P. Fouqu\u00e9, F. Bresolin, R.-P. Kudritzki, A. <em>Garc\u00eda-Varela<\/em>, O. Szewczyk, M. Szyma\u0144ski, M. Kubiak, \u0141. Wyrzykowski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2010AJ....140.1475P\" target=\"_blank\" rel=\"noreferrer noopener\">2010, AJ, 140, 1475<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: The Distance to the Sculptor Galaxy NGC 247 from Near-Infrared Photometry of Cepheid Variables<\/strong><br><em>W. Gieren, G. Pietrzy\u0144ski, I. Soszy\u0144ski, O. Szewczyk, F. Bresolin, R.-P. Kudritzki, M. Urbaneja, J. Storm, D. Minniti, A. Garc\u00eda-Varela<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2009ApJ...700.1141G\" target=\"_blank\" rel=\"noreferrer noopener\">2009, ApJ, 700, 1141<\/a><\/p>\n\n\n\n<p><strong>High-resolution spectroscopy for Cepheids distance determination. V. Impact of the cross-correlation method on the p-factor and the \u03b3-velocities<\/strong><br><em>N. Nardetto, W. Gieren, P. Kervella, P. Fouqu\u00e9, J. Storm, G. Pietrzy\u0144ski, D. Mourard, D. Queloz<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2009A%26A...502..951N\" target=\"_blank\" rel=\"noreferrer noopener\">2009, A&amp;A, 502, 951<\/a><\/p>\n\n\n\n<p><strong>From the Dynamics of Cepheids to the Milky Way Rotation, and the Distance Scale Calibration<\/strong><br><em>N. Nardetto, P. Kervella, T. Barnes, D. Bersier, A. Fokin, P. Foqu\u00e9, W. Gieren, D. Gillet, J.H. Groh, S. Kraus, P. Mathias, A. M\u00e9rand, F. Millour, D. Mourard, G. Pietrzy\u0144ski, D. Queloz, A. Stoekl, J. Storm<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2009AIPC.1170...13N\" target=\"_blank\" rel=\"noreferrer noopener\">2009, AIPC, 1170, 13<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: The Distances to the NGC 247 and WLM Galaxies From Cepheid Variables Discovered in a Wide-Field Imaging Survey<\/strong><br><em>A. Garc\u00eda, W. Gieren, G. Pietrzy\u0144ski<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2009RMxAC..35..309G\" target=\"_blank\" rel=\"noreferrer noopener\">2009, Revista Mexicana de Astronomia y Astrofisica Conference Series, 35, 309<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: the Distance to the Sculptor Group Galaxy NGC 247 from Cepheid Variables Discovered in a Wide-Field Imaging Survey<\/strong><br><em>A. Garc\u00eda-Varela, G. Pietrzy\u0144ski, W. Gieren, A. Udalski, I. Soszy\u0144ski, A. Walker, F. Bresolin, R.-P. Kudritzki, O. Szewczyk, M. Szyma\u0144ski, M. Kubiak, \u0141. Wyrzykowski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2008AJ....136.1770G\" target=\"_blank\" rel=\"noreferrer noopener\">2008, AJ, 136, 1770<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: The Distance to the Local Group Galaxy WLM from Near-Infrared Photometry of Cepheid Variables<\/strong><br><em>W. Gieren, G. Pietrzy\u0144ski, O. Szewczyk, I. Soszy\u0144ski, F. Bresolin, R.-P. Kudritzki, M. Urbaneja, J. Storm, D. Minniti<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2008ApJ...683..611G\" target=\"_blank\" rel=\"noreferrer noopener\">2008, ApJ, 683, 611<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: Near-Infrared Photometry of Cepheid Variables in the Sculptor Galaxy NGC 55<\/strong><br><em>W. Gieren, G. Pietrzy\u0144ski, I. Soszy\u0144ski, F. Bresolin, R.-P. Kudritzki, J. Storm, D. Minniti<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2008ApJ...672..266G\" target=\"_blank\" rel=\"noreferrer noopener\">2008, ApJ, 672, 266<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: The Distance to the Local Group Galaxy WLM from Cepheid Variables Discovered in a Wide-Field Imaging Survey<\/strong><br><em>G. Pietrzy\u0144ski, W. Gieren, A. Udalski, I. Soszy\u0144ski, F. Bresolin, R.-P. Kudritzki, A. Garcia, D. Minniti, R. Mennickent, O. Szewczyk, M. Szyma\u0144ski, M. Kubiak, \u0141. Wyrzykowski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2007AJ....134..594P\" target=\"_blank\" rel=\"noreferrer noopener\">2007, AJ, 134, 594<\/a><\/p>\n\n\n\n<p><strong>Classical Cepheids as age indicators<\/strong><br><em>M. Marconi, G. Bono, F. Caputo, S. Cassisi, P. Pietrukowicz, G. Pietrzy\u0144ski, W. Gieren<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2006MmSAI..77...67M\" target=\"_blank\" rel=\"noreferrer noopener\">2006, MmSAI, 77, 67<\/a><\/p>\n\n\n\n<p><strong>Evidence for a universal slope of the period-luminosity relation from direct distances to Cepheids in the LMC<\/strong><br><em>W. Gieren, J. Storm, T. Barnes, P. Fouqu\u00e9, G. Pietrzy\u0144ski, F. Kienzle<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2006MmSAI..77..198G\" target=\"_blank\" rel=\"noreferrer noopener\">2006, MmSAI, 77, 198<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: The Distance to the Sculptor Group Galaxy NGC 55 from a Newly Discovered Abundant Cepheid Population<\/strong><br><em>G. Pietrzy\u0144ski, W. Gieren, I. Soszy\u0144ski, A. Udalski, F. Bresolin, R.-P. Kudritzki, R. Mennickent, A. Walker, A. Garcia, O. Szewczyk, M. Szyma\u0144ski, M. Kubiak, \u0141. Wyrzykowski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2006AJ....132.2556P\" target=\"_blank\" rel=\"noreferrer noopener\">2006, AJ, 132, 2556<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: Distance to the Local Group Galaxy NGC 3109 from Near-Infrared Photometry of Cepheids<\/strong><br><em>I. Soszy\u0144ski, W. Gieren, G. Pietrzy\u0144ski, F. Bresolin, R.-P. Kudritzki, J. Storm<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2006ApJ...648..375S\" target=\"_blank\" rel=\"noreferrer noopener\">2006, ApJ, 648, 375<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: A Wide-Field Photometric Survey for Cepheid Variables in NGC 3109<\/strong><br><em>G. Pietrzy\u0144ski, W. Gieren, A. Udalski, I. Soszy\u0144ski, F. Bresolin, R.-P. Kudritzki, R. Mennickent, M. Kubiak, M. Szyma\u0144ski, S. Hidalgo<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2006ApJ...648..366P\" target=\"_blank\" rel=\"noreferrer noopener\">2006, ApJ, 648, 366<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: An Accurate Distance to the Local Group Galaxy NGC 6822 from Near-Infrared Photometry of Cepheid Variables<\/strong><br><em>W. Gieren, G. Pietrzy\u0144ski, K. Nalewajko, I. Soszy\u0144ski, F. Bresolin, R.-P. Kudritzki, D. Minniti, A. Romanowsky<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2006ApJ...647.1056G\" target=\"_blank\" rel=\"noreferrer noopener\">2006, ApJ, 647, 1056<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: The Distance to the Local Group Galaxy IC 1613 from Near-Infrared Photometry of Cepheid Variables<\/strong><br><em>G. Pietrzy\u0144ski, W. Gieren, I. Soszy\u0144ski, F. Bresolin, R.-P. Kudritzki, M. Dall&#8217;Ora, J. Storm, G. Bono<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2006ApJ...642..216P\" target=\"_blank\" rel=\"noreferrer noopener\">2006, ApJ, 642, 216<\/a><\/p>\n\n\n\n<p><strong>The Araucaria project. Bright variable stars in NGC 6822 from a wide-field imaging survey<\/strong><br><em>R. Mennickent, W. Gieren, I. Soszy\u0144ski, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2006A%26A...450..873M\" target=\"_blank\" rel=\"noreferrer noopener\">2006, A&amp;A, 450, 873<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: The Effect of Blending on the Cepheid Distance to NGC 300 from Advanced Camera for Surveys Images<\/strong><br><em>F. Bresolin, G. Pietrzy\u0144ski, W. Gieren, R.-P. Kudritzki<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2005ApJ...634.1020B\" target=\"_blank\" rel=\"noreferrer noopener\">2005, ApJ, 634, 1020<\/a><\/p>\n\n\n\n<p><strong>Mean JHK Magnitudes of Fundamental-Mode Cepheids from Single-Epoch Observations<\/strong><br><em>I. Soszy\u0144ski, W. Gieren, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2005PASP..117..823S\" target=\"_blank\" rel=\"noreferrer noopener\">2005, PASP, 117, 823<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: Near-Infrared Photometry of Cepheid Variables in the Sculptor Galaxy NGC 300<\/strong><br><em>W. Gieren, G. Pietrzy\u0144ski, I. Soszy\u0144ski, F. Bresolin, R.-P. Kudritzki, D. Minniti, J. Storm<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2005ApJ...628..695G\" target=\"_blank\" rel=\"noreferrer noopener\">2005, ApJ, 628, 695<\/a><\/p>\n\n\n\n<p><strong>Direct Distances to Cepheids in the Large Magellanic Cloud: Evidence for a Universal Slope of the Period-Luminosity Relation up to Solar Abundance<\/strong><br><em>W. Gieren, J. Storm, T. Barnes, P. Fouqu\u00e9, G. Pietrzy\u0144ski, F. Kienzle<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2005ApJ...627..224G\" target=\"_blank\" rel=\"noreferrer noopener\">2005, ApJ, 627, 224<\/a><\/p>\n\n\n\n<p><strong>Classical Cepheid Pulsation Models. X. The Period-Age Relation<\/strong><br><em>G. Bono, M. Marconi, S. Cassisi, F. Caputo, W. Gieren, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2005ApJ...621..966B\" target=\"_blank\" rel=\"noreferrer noopener\">2005, ApJ, 621, 966<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: The Distance to the Local Group Galaxy NGC 6822 from Cepheid Variables Discovered in a Wide-Field Imaging Survey<\/strong><br><em>G. Pietrzy\u0144ski, W. Gieren, A. Udalski, F. Bresolin, R.-P. Kudritzki, I. Soszy\u0144ski, M. Szyma\u0144ski, M. Kubiak<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2004AJ....128.2815P\" target=\"_blank\" rel=\"noreferrer noopener\">2004, AJ, 128, 2815<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: An Improved Distance to the Sculptor Spiral Galaxy NGC 300 from Its Cepheid Variables<\/strong><br><em>W. Gieren, G. Pietrzy\u0144ski, A. Walker, F. Bresolin, D. Minniti, R.-P. Kudritzki, A. Udalski, I. Soszy\u0144ski, P. Fouqu\u00e9, J. Storm, G. Bono<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2004AJ....128.1167G\" target=\"_blank\" rel=\"noreferrer noopener\">2004, AJ, 128, 1167<\/a><\/p>\n\n\n\n<p><strong>The ARAUCARIA Project: Discovery of Cepheid Variables in NGC 300 from a Wide-Field Imaging Survey<\/strong><br><em>G. Pietrzy\u0144ski, W. Gieren, P. Fouqu\u00e9, F. Pont<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2002AJ....123..789P\" target=\"_blank\" rel=\"noreferrer noopener\">2002, AJ, 123, 789<\/a><\/p>\n\n\n\n<div class=\"su-divider su-divider-style-default\" style=\"margin:16px 0;border-width:1px;border-color:#275b12\"><a href=\"#\" style=\"color:#275b12\">Go to top<\/a><\/div>\n\n\n\n<div class=\"su-spacer\" style=\"height:10px\"><\/div>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"t2cep\">Type II Cepheids<\/h1>\n\n\n\n<p><strong>Period\u2013luminosity relations for Galactic Type II Cepheids in the Sloan bands<\/strong><br><em>W. Narloch G. Hajdu, G. Pietrzy\u0144ski, P. Wielg\u00f3rski, R. Smolec, W. Gieren, B. Zgirski, M. G\u00f3rski, P. Karczmarek, D. Graczyk<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2025A%26A...697A..30N\/abstract\">2025, A&amp;A, 697A, 30<\/a><\/p>\n\n\n\n<p><strong>Projection factor and radii of Type II Cepheids: BL Her stars<\/strong><br><em>P. Wielg\u00f3rski, G. Pietrzy\u0144ski, W. Gieren, B. Zgirski, M. G\u00f3rski, J. Storm, N. Nardetto, P. Kervella, G. Bras, G. Hajdu, V. Hocd\u00e9, B. Pilecki, W. Narloch, P. Karczmarek, W. Pych, R. Chini, K. Hodapp<\/em><br><a href=\"https:\/\/www.aanda.org\/articles\/aa\/pdf\/2024\/09\/aa50182-24.pdf\">2024, A&amp;A, 689A, 241<\/a><\/p>\n\n\n\n<p><strong>An absolute calibration of the near-infrared Period-Luminosity Relations of Type II Cepheids in the Milky Way and in the Large Magellanic Cloud<\/strong><br><em>P.&nbsp;Wielg\u00f3rski, G. Pietrzy\u0144ski, B. Pilecki, W. Gieren, B. Zgirski, M. G\u00f3rski, G. Hajdu, W. Narloch, P.&nbsp;Karczmarek, R.&nbsp;Smolec, P.&nbsp;Kervella, J.&nbsp;Storm, A.&nbsp;Gallenne, L.&nbsp;Breuval, M.&nbsp;Lewis, M.&nbsp;Ka\u0142uszy\u0144ski, D.&nbsp;Graczyk, W.&nbsp;Pych, K.&nbsp;Suchomska, M.&nbsp;Taormina, \u2026<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2022ApJ...927...89W\/abstract\">2022, ApJ, 927, 89<\/a><\/p>\n\n\n\n<p><strong>The Dynamical Mass and Evolutionary Status of the Type II Cepheid in the Eclipsing Binary System OGLE-LMC-T2CEP-211 with a Double-ring Disk<\/strong><br><em>B. Pilecki, A. Dervi\u0219o\u011flu, W. Gieren, R. Smolec, I. Soszy\u0144ski, G. Pietrzy\u0144ski, I.B. Thompson, M. Taormina<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2018ApJ...868...30P\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2018, ApJ, 868, 30<\/a><\/p>\n\n\n\n<p><strong>Mass and p-factor of the type II Cepheid OGLE-LMC-T2CEP-098 in a binary system<\/strong><br><em>B. Pilecki, W. Gieren, R. Smolec, G. Pietrzy\u0144ski, I. B. Thompson, R. I. Anderson, G. Bono, I. Soszy\u0144ski, P. Kervella, N. Nardetto, M. Taormina, K. St\u0119pie\u0144, P. Wielg\u00f3rski<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2017ApJ...842..110P\" target=\"_blank\" rel=\"noreferrer noopener\">2017, ApJ, 842, 110<\/a> &#8212; <a href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2017\/12\/17\/peculiar-w-vir-type-cepheid-mass-determination\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a> &#8212; <a href=\"https:\/\/araucaria.camk.edu.pl\/p\/t2c098\" target=\"_blank\" rel=\"noreferrer noopener\">get data<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: The Distance to the Small Magellanic Cloud from Near Infrared Photometry of Type II Cepheids<\/strong><br><em>A. Ciechanowska, G. Pietrzy\u0144ski, O. Szewczyk, W. Gieren, I. Soszy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2010AcA....60..233C\" target=\"_blank\" rel=\"noreferrer noopener\">2010, AcA, 60, 233<\/a><\/p>\n\n\n\n<div class=\"su-divider su-divider-style-default\" style=\"margin:16px 0;border-width:1px;border-color:#275b12\"><a href=\"#\" style=\"color:#275b12\">Go to top<\/a><\/div>\n\n\n\n<div class=\"su-spacer\" style=\"height:10px\"><\/div>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"acep\">RR Lyrae<\/h1>\n\n\n\n<p><strong>Period-luminosity and period-luminosity-metallicity relations for Galactic RR Lyrae stars in the Sloan bands<\/strong><br><em>W. Narloch, G. Hajdu, G. Pietrzy\u0144ski, W. Gieren, B. Zgirski, P. Wielg\u00f3rski, P. Karczmarek, M. G\u00f3rski, D. Graczyk<\/em><br><a href=\"https:\/\/doi.org\/10.1051\/0004-6361\/202450364\">2024, A&amp;A, 689A, 138<\/a><\/p>\n\n\n\n<p><strong>The Infrared Surface Brightness technique applied to RR Lyrae stars from the solar neighborhood<\/strong><br><em>B. Zgirski, W. Gieren, G. Pietrzy\u0144ski, M. G\u00f3rski, P. Wielg\u00f3rski, J. Storm, G. Bras, P. Kervella, N. Nardetto, G. Hajdu, R. Chini, M. Haas<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2024arXiv240802102Z\/abstract\">2024, arXiv:2408.02102<\/a><\/p>\n\n\n\n<p><strong>The Baade-Wesselink projection factor of RR Lyrae stars. Calibration from OHP\/SOPHIE spectroscopy and Gaia DR3 parallaxes<\/strong><br><em>G. Bras, P. Kervella, B. Trahin, P. Wielg\u00f3rski, B. Zgirski, A. M\u00e9rand, N. Nardetto, A. Gallenne, V. Hocd\u00e9, L. Breuval, A. Afanasiev, G. Pietrzy\u0144ski, W. Gieren<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2024A%26A...684A.126B\/abstract\">2024, A&amp;A 684A, 126<\/a><\/p>\n\n\n\n<p><strong>New Near-infrared Period-Luminosity-Metallicity Relations for Galactic RR Lyrae Stars Based on Gaia EDR3 Parallaxes<\/strong><br><em>B. Zgirski, G. Pietrzy\u0144ski, M. G\u00f3rski, W. Gieren, P. Wielg\u00f3rski, P. Karczmarek, G. Hajdu, M. Lewis, R. Chini, D. Graczyk, M. Ka\u0142uszy\u0144ski, W. Narloch, B. Pilecki, G. Garc\u00eda Rojas, K. Suchomska, M. Taormina<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2023ApJ...951..114Z\/abstract\">2023, ApJ, 951, 114<\/a><\/p>\n\n\n\n<p><strong>Properties of RR Lyrae variables in binary systems: towards a first-time mass measurement<\/strong><br>G. <em>Hajdu, G. Pietrzy\u0144ski, M. Catelan, J. Jurcsik, P. Karczmarek, B. Pilecki, I.B. Thompson<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2022AAS...24041504H\/abstract\">2022, Bulletin of the American Astronomical Society, Vol. 54, No. 6 e-id 2022n6i415p04<\/a><\/p>\n\n\n\n<p><strong>Studies of RR Lyrae Variables in Binary Systems. I. Evidence of a Trimodal Companion Mass Distribution<\/strong><br><em>G. Hajdu, G. Pietrzy\u0144ski, J. Jurcsik, M. Catelan, P. Karczmarek, B. Pilecki, I. Soszy\u0144ski, A. Udalski, I.B. Thompson<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2021ApJ...915...50H\/abstract\">2021, ApJ, 915, 50<\/a><\/p>\n\n\n\n<p><strong>Multiplicity of Galactic Cepheids and RR Lyrae stars from Gaia DR2. I. Binarity from proper motion anomaly<\/strong><br><em>P. Kervella, A. Gallenne, N.R. Nancy, L. Szabados, F. Arenou, A. M\u00e9rand, Y. Proto, P. Karczmarek, N. Nardetto, W. Gieren, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2019A%26A...623A.116K\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2019, A&amp;A, 623A, 116<\/a><\/p>\n\n\n\n<p><strong>Multiplicity of Galactic Cepheids and RR Lyrae stars from Gaia DR2. II. Resolved common proper motion pairs<\/strong><br><em>P. Kervella, A. Gallenne, N.R. Evans, L. Szabados, F. Arenou, A. M\u00e9rand, N. Nardetto, W. Gieren, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2019A%26A...623A.117K\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2019, A&amp;A, 623A, 117<\/a><\/p>\n\n\n\n<p><strong>Classical Pulsators in Eclipsing Binary Systems<\/strong><br><em>G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2018pas6.conf..229P\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2018, Proceedings of the Polish Astronomical Society, 6, 229<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: The Distance to the Fornax Dwarf Galaxy from Near-infrared Photometry of RR Lyrae Stars<\/strong><br><em>P. Karczmarek, G. Pietrzy\u0144ski, M. G\u00f3rski, W. Gieren, D. Bersier<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2017AJ....154..263K\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2017, AJ, 154, 263<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: The Distance to the Carina Dwarf Galaxy from Infrared Photometry of RR Lyrae Stars<\/strong><br><em>P. Karczmarek, G. Pietrzy\u0144ski, W. Gieren, K. Suchomska, P. Konorski, M. G\u00f3rski, B. Pilecki, D. Graczyk, P. Wielg\u00f3rski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2015AJ....150...90K\" target=\"_blank\" rel=\"noreferrer noopener\">2015, AJ, 150, 90<\/a> &#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2015\/09\/17\/distance-to-carina-dwarf-galaxy\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: The Distance to the Small Magellanic Cloud from Near-Infrared Photometry of RR Lyrae Variables<\/strong><br><em>O. Szewczyk, G. Pietrzy\u0144ski, W. Gieren, A. Ciechanowska, F. Bresolin, R.-P. Kudritzki<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2009AJ....138.1661S\" target=\"_blank\" rel=\"noreferrer noopener\">2009, AJ, 138, 1661<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project. The Distance of the Large Magellanic Cloud from Near-Infrared Photometry of RR Lyrae Variables<\/strong><br><em>O. Szewczyk, G. Pietrzy\u0144ski, W. Gieren, J. Storm, A. Walker, L. Rizzi, K. Kinemuchi, F. Bresolin, R.-P. Kudritzki, M. Dall&#8217;Ora<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2008AJ....136..272S\" target=\"_blank\" rel=\"noreferrer noopener\">2008, AJ, 136, 272<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: the Distance to the Sculptor Dwarf Spheroidal Galaxy from Infrared Photometry of RR Lyrae Stars<\/strong><br><em>G. Pietrzy\u0144ski, W. Gieren, O. Szewczyk, A. Walker, L. Rizzi, F. Bresolin, R.-P. Kudritzki, K. Nalewajko, J. Storm, M. Dall&#8217;Ora, V. Ivanov<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2008AJ....135.1993P\" target=\"_blank\" rel=\"noreferrer noopener\">2008, AJ, 135, 1993<\/a><\/p>\n\n\n\n<div class=\"su-divider su-divider-style-default\" style=\"margin:16px 0;border-width:1px;border-color:#275b12\"><a href=\"#\" style=\"color:#275b12\">Go to top<\/a><\/div>\n\n\n\n<div class=\"su-spacer\" style=\"height:10px\"><\/div>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"trgb\">Tip of the Red Giant Branch stars<\/h1>\n\n\n\n<p><strong>The Araucaria Project: Multi-band Calibrations of the TRGB Absolute Magnitude<\/strong><br><em>M. G\u00f3rski, G. Pietrzy\u0144ski, W. Gieren, D. Graczyk, K. Suchomska, P. Karczmarek, R.E. Cohen, B. Zgirski, P. Wielg\u00f3rski, B. Pilecki, M. Taormina, Z. Ko\u0142aczkowski, W. Narloch<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2018AJ....156..278G\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2018, AJ, 156, 278<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: On the Tip of the Red Giant Branch Distance Determination to the Magellanic Clouds<\/strong><br><em>M. G\u00f3rski, G. Pietrzy\u0144ski, W. Gieren, M. Catelan, B. Pilecki, P. Karczmarek, K Suchomska, D. Graczyk, P. Konorski, B. Zgirski, P. Wielg\u00f3rski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2016AJ....151..167G\" target=\"_blank\" rel=\"noreferrer noopener\">2016, AJ, 151, 167<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project. Infrared Tip of the Red Giant Branch Distances to Five Dwarf Galaxies in the Local Group<\/strong><br><em>M. G\u00f3rski, G. Pietrzy\u0144ski, W. Gieren<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2011AJ....141..194G\" target=\"_blank\" rel=\"noreferrer noopener\">2011, AJ, 141, 194<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project. Infrared Tip of the Red Giant Branch Distances to the Carina and Fornax Dwarf Spheroidal Galaxies<\/strong><br><em>G. Pietrzy\u0144ski, M. G\u00f3rski, W. Gieren, V. Ivanov, F. Bresolin, R.-P. Kudritzki<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2009AJ....138..459P\" target=\"_blank\" rel=\"noreferrer noopener\">2009, AJ, 138, 459<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: The Distance to NGC 300 from the Red Giant Branch Tip Using HST ACS Imaging<\/strong><br><em>L. Rizzi, F. Bresolin, R.-P. Kudritzki, W. Gieren, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2006ApJ...638..766R\" target=\"_blank\" rel=\"noreferrer noopener\">2006, ApJ, 638, 766<\/a><\/p>\n\n\n\n<div class=\"su-divider su-divider-style-default\" style=\"margin:16px 0;border-width:1px;border-color:#275b12\"><a href=\"#\" style=\"color:#275b12\">Go to top<\/a><\/div>\n\n\n\n<div class=\"su-spacer\" style=\"height:10px\"><\/div>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"jagb\">Carbon stars (JAGB)<\/h1>\n\n\n\n<p><strong>The Araucaria Project. Distances to Nine Galaxies Based on a Statistical Analysis of their Carbon Stars (JAGB Method)<\/strong><br><em>B. Zgirski, G. Pietrzy\u0144ski, W. Gieren, M. G\u00f3rski, P. Wielg\u00f3rski, P. Karczmarek, F. Bresolin, P. Kervella, R.-P. Kudritzki, J. Storm, D. Graczyk, G. Hajdu, W. Narloch, B. Pilecki, K. Suchomska, M. Taormina<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2021ApJ...916...19Z\/abstract\">2021, ApJ, 916, 19<\/a> &#8212; <a href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2020\/01\/22\/reddening-maps-of-the-magellanic-clouds\/\">more <\/a><a href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2021\/05\/01\/jagb-distance\/\" data-type=\"URL\" data-id=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2021\/05\/01\/jagb-distance\/\">information<\/a><\/p>\n\n\n\n<div class=\"su-divider su-divider-style-default\" style=\"margin:16px 0;border-width:1px;border-color:#275b12\"><a href=\"#\" style=\"color:#275b12\">Go to top<\/a><\/div>\n\n\n\n<div class=\"su-spacer\" style=\"height:10px\"><\/div>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"rg\">Red Giant stars<\/h1>\n\n\n\n<p><strong>Calibrating the surface brightness &#8211; color relation for late-type red giants stars in the visible domain using VEGA\/CHARA interferometric observations<\/strong><br><em>N. Nardetto, A. Salsi, D. Mourard, V. Hocd\u00e9, K. Perraut, A. Gallenne, A. M\u00e9rand, D. Graczyk, G. Pietrzynski, W. Gieren, P. Kervella, R. Ligi, A. Meilland, F. Morand, P. Stee, I. Tallon-Bosc, T. ten Brummelaar<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2020A%26A...639A..67N\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2020, A&amp;A, 639, A67<\/a><\/p>\n\n\n\n<p><strong>Precise distances to red giant stars with seismic data using the near-IR surface-brightness relation<\/strong><br><em>J. Storm, D. Graczyk, M. Valentini, F. Anders, C. Chiappini, W. Gieren, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2018IAUS..334..368S\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2018, IAUS, 334, 368<\/a><\/p>\n\n\n\n<div class=\"su-divider su-divider-style-default\" style=\"margin:16px 0;border-width:1px;border-color:#275b12\"><a href=\"#\" style=\"color:#275b12\">Go to top<\/a><\/div>\n\n\n\n<div class=\"su-spacer\" style=\"height:10px\"><\/div>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"rc\">Red Clump stars<\/h1>\n\n\n\n<p><strong>Fundamental properties of red-clump stars from long-baseline H-band interferometry<\/strong><br>A. <em>Gallenne, G. Pietrzy\u0144ski, D. Graczyk, N. Nardetto, A. M\u00e9rand, P. Kervella, W. Gieren, S. Villanova, R.E. Mennickent, B. Pilecki<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2018A%26A...616A..68G\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2018, A&amp;A, 616, 68<\/a><\/p>\n\n\n\n<p><strong>A new Large Magellanic Cloud K-band distance from precision measurements of nearby red clump stars<\/strong><br><em>C. Laney, M. Joner, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2012MNRAS.419.1637L\" target=\"_blank\" rel=\"noreferrer noopener\">2012, MNRAS, 419, 1637<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project. Population Effects on the V- and I-band Magnitudes of Red Clump Stars<\/strong><br><em>G. Pietrzy\u0144ski, M. G\u00f3rski, W. Gieren, D. Laney, A. Udalski, A. Ciechanowska<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2010AJ....140.1038P\" target=\"_blank\" rel=\"noreferrer noopener\">2010, AJ, 140, 1038<\/a><\/p>\n\n\n\n<p><strong>The abundances of nearby red clump giants<\/strong><br><em>Y. Liu, G. Zhao, J. Shi, G. Pietrzy\u0144ski, W. Gieren<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2007MNRAS.382..553L\" target=\"_blank\" rel=\"noreferrer noopener\">2007, MNRAS, 382, 553<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: Dependence of Mean K, J, and I Absolute Magnitudes of Red Clump Stars on Metallicity and Age<\/strong><br><em>G. Pietrzy\u0144ski, W. Gieren, A. Udalski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2003AJ....125.2494P\" target=\"_blank\" rel=\"noreferrer noopener\">2003, AJ, 125, 2494<\/a><\/p>\n\n\n\n<p><strong>The ARAUCARIA Project: Deep Near-Infrared Survey of Nearby Galaxies. I. The Distance to the Large Magellanic Cloud from K-Band Photometry of Red Clump Stars<\/strong><br><em>G. Pietrzy\u0144ski, W. Gieren<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2002AJ....124.2633P\" target=\"_blank\" rel=\"noreferrer noopener\">2002, AJ, 124, 2633<\/a><\/p>\n\n\n\n<div class=\"su-divider su-divider-style-default\" style=\"margin:16px 0;border-width:1px;border-color:#275b12\"><a href=\"#\" style=\"color:#275b12\">Go to top<\/a><\/div>\n\n\n\n<div class=\"su-spacer\" style=\"height:10px\"><\/div>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"other\">Other<\/h1>\n\n\n\n<p><strong>Modelling photometric reverberation mapping data for the next generation of big data surveys. Quasar accretion discs sizes with the LSST<br><\/strong><em>F. Pozo Nu\u00f1ez, C. Bruckmann, S. Deesamutara, B. Czerny, S. Panda, A. P. Lobban, G. Pietrzy\u0144ski, K. L. Polsterer<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2023MNRAS.522.2002P\/abstract\">2023, MNRAS, 522, 2002<\/a><\/p>\n\n\n\n<p><strong>Metallicities and ages for star clusters and their surrounding fields in the Large Magellanic Cloud<\/strong><br>W. <em>Narloch, G. Pietrzy\u0144ski, W. Gieren, A.E. Piatti, P. Karczmarek, M. G\u00f3rski, D. Graczyk, R. Smolec, G. Hajdu, K. Suchomska, B. Zgirski, P. Wielg\u00f3rski, B. Pilecki, M. Taormina, M. Ka\u0142uszy\u0144ski, W. Pych, G. Rojas Garc\u00eda, M.O. Lewis<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2022A%26A...666A..80N\/abstract\">2022, A&amp;A, 666, A80<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: Improving the cosmic distance scale<\/strong><br><em>The Araucaria Project: G. Pietrzy\u0144ski, W. Gieren, P. Karczmarek, M. G\u00f3rski, B. Zgirski, P. Wielg\u00f3rski, L. Breuval, K. Suchomska, A. Gallenne, P. Kervella, G. Hajdu, B. Pilecki, J. Storm, N. Nardetto, R.P. Kudritzki, M. Taormina, F. Bresolin, R. Smolec, W. Narloch, C. Ga\u0142an, M. Lewis, R. Chini<\/em><br>The book consists of a number of short articles that present achievements of the Araucaria members, collaborators, and friends, in various aspects of distance determinations and related topics. It celebrates the 20-year anniversary of the Araucaria Project, acknowledges the people who worked for its success, and popularises our methods and results among broader readership. This book is a part of a project that has received funding from the European Union&#8217;s Horizon 2020 research and innovation programme under grant agreement No 695099. The book was published in 2021 on behalf of the Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences. Publisher: Wydawnictwo Aleksander, Pu\u0142tusk 2021. ISBN: 978-83-66856-07-3. <br><a href=\"https:\/\/arxiv.org\/abs\/2305.17247\">arXiv:2305.17247<\/a><\/p>\n\n\n\n<p><strong>Inspecting the Cepheid Distance Ladder: the Hubble Space Telescope Distance to the SN Ia Host Galaxy NGC 5584<\/strong><br><em>B. Javanmardi, A. M\u00e9rand, P. Kervella, L. Breuval, A. Gallenne, N. Nardetto, W. Gieren, G. Pietrzy\u0144ski, V. Hocd\u00e9, S. Borgniet<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2021ApJ...911...12J\/abstract\">2021, ApJ, 911, 12<\/a><\/p>\n\n\n\n<p><strong>Metallicities and ages for 35 star clusters and their surrounding fields in the Small Magellanic Cloud<\/strong><br><em>W. Narloch, G. Pietrzy\u0144ski, W. Gieren, A. E. Piatti, M. G\u00f3rski, P. Karczmarek, D. Graczyk, K. Suchomska, B. Zgirski, P. Wielg\u00f3rski, B. Pilecki, M. Taormina, M. Ka\u0142uszy\u0144ski, W. Pych, G. Hajdu, G. Rojas Garc\u00eda<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2021A&amp;A...647A.135N\/abstract\">2021, A&amp;A, 647, A135<\/a> &#8212; <a href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/stromgren-photometry-smc\/\" data-type=\"page\" data-id=\"1671\">database<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project: Deep Near-infrared Photometric Maps of Local and Sculptor Group Galaxies. I. Carina, Fornax, and Sculptor<\/strong><br><em>P. Karczmarek, G. Pietrzy\u0144ski, W. Gieren, W. Narloch, G. Hajdu, G. Rojas Garc\u00eda, M. Ka\u0142uszy\u0144ski, M. G\u00f3rski, K. Suchomska, D. Graczyk, B. Pilecki, P. Wielg\u00f3rski, B. Zgirski, M. Taormina, M. Sadh<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/#abs\/2021ApJS..253...42K\/abstract\">2021, ApJS, 253, 42<\/a> &#8212; <a href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/nir-photometric-maps\/\" data-type=\"page\" data-id=\"1485\">database<\/a><\/p>\n\n\n\n<p><strong>Empirical calibration of the reddening maps in the Magellanic Clouds<\/strong><br><em>M. G\u00f3rski, B. Zgirski, G. Pietrzy\u0144ski, W. Gieren, P. Wielg\u00f3rski, D. Graczyk, R.-P. Kudritzki, B. Pilecki, W. Narloch, P. Karczmarek, K. Suchomska, M. Taormina<\/em><br><a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2020ApJ...889..179G\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2020, ApJ, 889, 179<\/a> &#8212; <a href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2020\/01\/22\/reddening-maps-of-the-magellanic-clouds\/\">more information<\/a> &#8212; <a href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/magellanic-clouds-extinction-maps\/\">reddening maps<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project Establishes the Most Precise Benchmark for Cosmic Distances<\/strong><br><em>G. Pietrzy\u0144ski, D. Graczyk, A. Gallenne, W. Gieren, I. Thompson, B. Pilecki, P. Karczmarek, M. G\u00f3rski, K. Suchomska, M. Taormina, B. Zgirski, P. Wielg\u00f3rski, N. Nardetto, P. Kervella, F. Bresolin, R.-P. Kudritzki, J. Storm, R. Smolec, W. Narloch, M. Ka\u0142uszy\u0144ski, S. Villanova<\/em><br><a aria-label=\"2020, The Messenger, 179, 24 (opens in a new tab)\" href=\"https:\/\/www.eso.org\/sci\/publications\/messenger\/archive\/no.179-mar20\/messenger-no179-24-28.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">2020, Msngr, 179, 24<\/a><\/p>\n\n\n\n<p><strong>Candidates for non-pulsating stars located in the Cepheid instability strip in the Large Magellanic Cloud based on Str\u00f6mgren photometry<\/strong><br><em>W. Narloch, G. Pietrzy\u0144ski, Z. Ko\u0142aczkowski, R. Smolec, M. G\u00f3rski, K. Kubiak, A. Udalski, I. Soszy\u0144ski, D. Graczyk, W. Gieren, P. Karczmarek, B. Zgirski, P. Wielg\u00f3rski, K. Suchomska, B. Pilecki, M. Taormina, M. Ka\u0142uszy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2019arXiv190800447N\/abstract\" target=\"_blank\" rel=\"noreferrer noopener\">2019, MNRAS, 489, 3285<\/a>&nbsp;&#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2019\/10\/10\/candidates-for-non-pulsating-stars-in-the-cepheid-instability-strip\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a><\/p>\n\n\n\n<p><strong>The occurrence of Binary Evolution Pulsators in the classical instability strip of RR Lyrae and Cepheid variables.<\/strong><br><em>P. Karczmarek, G. Wiktorowicz, K. I\u0142kiewicz, R. Smolec, K. St\u0119pie\u0144, G. Pietrzy\u0144ski, W. Gieren, K. Belczynski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2017MNRAS.466.2842K\" target=\"_blank\" rel=\"noreferrer noopener\">2017, MNRAS, 466, 2842<\/a> &#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2017\/01\/30\/occurrence-of-beps\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a>&nbsp;&#8212; <a aria-label=\" (opens in a new tab)\" href=\"http:\/\/www.astrouw.edu.pl\/~pkarczmarek\/projects\/beptable.dat\" target=\"_blank\" rel=\"noreferrer noopener\">get data<\/a><\/p>\n\n\n\n<p><strong>Young stars and ionized nebulae in M83: comparing chemical abundances at high metallicity<\/strong><br><em>F. Bresolin, R.-P. Kudritzki, M. A. Urbaneja, W. Gieren, I.-T. Ho, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2016ApJ...830...64B\" target=\"_blank\" rel=\"noreferrer noopener\">2016, ApJ, 830, 64<\/a><\/p>\n\n\n\n<p><strong>Improving the surface brightness-color relation for early-type stars using optical interferometry<\/strong><br><em>M. Challouf, N. Nardetto, D. Mourard, D. Graczyk, H. Aroui, O. Chesneau, O. Delaa, G. Pietrzy\u0144ski, W. Gieren, R. Ligi, A. Meilland, K. Perraut, I. Tallon-Bosc, H. McAlister, T. ten Brummelaar, J. Sturmann, L. Sturmann, N. Turner, C. Farrington, N. Vargas, &#8230;<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2014A&amp;A...570A.104C\" target=\"_blank\" rel=\"noreferrer noopener\">2014, A&amp;A, 570, A104<\/a><\/p>\n\n\n\n<p><strong>VISTA Variables in the V\u00eda L\u00e1ctea (VVV): Halfway Status and Results<\/strong><br><em>M. Hempel, D. Minniti, I. D\u00e9k\u00e1ny, R. Saito, P. Lucas, J. Emerson, A. Ahumada, S. Aigrain, M. Alonso, J. Alonso-Garc&#8217;\u0131a, E. Am\u00f4res, R. Angeloni, J. Arias, R. Bandyopadhyay, R. Barb\u00e1, B. Barbuy, G. Baume, J. Beamin, L. Bedin, E. Bica, J. Borissova, &#8230;<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2014Msngr.155...29H\" target=\"_blank\" rel=\"noreferrer noopener\">2014, Msngr, 155, 29<\/a><\/p>\n\n\n\n<p><strong>Understanding the dynamical structure of pulsating stars: The center-of-mass velocity and the Baade-Wesselink projection factor of the \u03b2 Cephei star \u03b1 Lupi<\/strong><br><em>N. Nardetto, P. Mathias, A. Fokin, E. Chapellier, G. Pietrzy\u0144ski, W. Gieren, D. Graczyk, D. Mourard<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2013A&amp;A...553A.112N\" target=\"_blank\" rel=\"noreferrer noopener\">2013, A&amp;A, 553, A112<\/a><\/p>\n\n\n\n<p><strong>Pulsation models for the 0.26 M<sub>\u2609<\/sub>&nbsp;star mimicking RR Lyrae pulsator. Model survey for the new class of variable stars<\/strong><br><em>R. Smolec, G. Pietrzy\u0144ski, D. Graczyk, B. Pilecki, W. Gieren, I. Thompson, K. St\u0119pie\u0144, P. Karczmarek, P. Konorski, M. G\u00f3rski, K. Suchomska, G. Bono, P. Prada, N. Nardetto<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2013MNRAS.428.3034S\" target=\"_blank\" rel=\"noreferrer noopener\">2013, MNRAS, 428, 3034<\/a><\/p>\n\n\n\n<p><strong>Photometric Maps Based on the OGLE-III Shallow Survey in the Large Magellanic Cloud<\/strong><br><em>K. Ulaczyk, M. Szyma\u0144ski, A. Udalski, M. Kubiak, G. Pietrzy\u0144ski, I. Soszy\u0144ski, \u0141. Wyrzykowski, R. Poleski, W. Gieren, A. Walker, A. <em>Garc\u00eda-Varela<\/em><\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2012AcA....62..247U\" target=\"_blank\" rel=\"noreferrer noopener\">2012, AcA, 62, 247<\/a><\/p>\n\n\n\n<p><strong>RR-Lyrae-type pulsations from a 0.26-solar-mass star in a binary system<\/strong><br><em>G. Pietrzy\u0144ski, I. Thompson, W. Gieren, D. Graczyk, K. St\u0119pie\u0144, G. Bono, P. Moroni, B. Pilecki, A. Udalski, I. Soszy\u0144ski, G. Preston, N. Nardetto, A. McWilliam, I. Roederer, M. G\u00f3rski, P. Konorski, J. Storm<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2012Natur.484...75P\" target=\"_blank\" rel=\"noreferrer noopener\">2012, Nature, 484, 75<\/a> &#8212; <a aria-label=\" (opens in a new tab)\" href=\"https:\/\/araucaria.camk.edu.pl\/index.php\/2012\/04\/01\/binary-evolution-pulsator-bep\/\" target=\"_blank\" rel=\"noreferrer noopener\">more information<\/a><\/p>\n\n\n\n<p><strong>VVV DR1: The first data release of the Milky Way bulge and southern plane from the near-infrared ESO public survey VISTA variables in the V&#8217;\u0131a L\u00e1ctea<\/strong><br><em>R. Saito, M. Hempel, D. Minniti, P. Lucas, M. Rejkuba, I. Toledo, O. Gonzalez, J. Alonso-Garc&#8217;\u0131a, M. Irwin, E. Gonzalez-Solares, S. Hodgkin, J. Lewis, N. Cross, V. Ivanov, E. Kerins, J. Emerson, M. Soto, E. Am\u00f4res, S. Gurovich, I. D\u00e9k\u00e1ny, R. Angeloni, &#8230;<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2012A%26A...537A.107S\" target=\"_blank\" rel=\"noreferrer noopener\">2012, A&amp;A, 537, A107<\/a><\/p>\n\n\n\n<p><strong>The VVV Survey of the Milky Way: first year results<\/strong><br><em>D. Minniti, J. Clari\u00e1, R. Saito, M. Hempel, P. Lucas, M. Rejkuba, I. Toledo, O. Gonzalez, J. Alonso-Garc&#8217;\u0131a, M. Irwin, E. Gonzalez-Solares, N. Cross, V. Ivanov, M. Soto, I. D\u00e9k\u00e1ny, R. Angeloni, M. Catelan, E. Am\u00f4res, S. Gurovich, J. Emerson, J. Lewis, &#8230;<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2011BAAA...54..265M\" target=\"_blank\" rel=\"noreferrer noopener\">2011, BAAA, 54, 265<\/a><\/p>\n\n\n\n<p><strong>VISTA Variables in the V\u00eda L\u00e1ctea (VVV): Current Status and First Results<\/strong><br><em>R. Saito, M. Hempel, J. Alonso-Garc\u00eda, I. Toledo, J. Borissova, O. Gonz\u00e1lez, J. Beamin, D. Minniti, P. Lucas, J. Emerson, A. Ahumada, S. Aigrain, M. Alonso, E. Am\u00f4res, R. Angeloni, J. Arias, R. Bandyopadhyay, R. Barb\u00e1, B. Barbuy, G. Baume, L. Bedin, &#8230;<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2010Msngr.141...24S\" target=\"_blank\" rel=\"noreferrer noopener\">2010, Msngr, 141, 24<\/a><\/p>\n\n\n\n<p><strong>VISTA Variables in the Via Lactea (VVV): The public ESO near-IR variability survey of the Milky Way<\/strong><br><em>D. Minniti, P. Lucas, J. Emerson, R. Saito, M. Hempel, P. Pietrukowicz, A. Ahumada, M. Alonso, J. Alonso-Garcia, J. Arias, R. Bandyopadhyay, R. Barb\u00e1, B. Barbuy, L. Bedin, E. Bica, J. Borissova, L. Bronfman, G. Carraro, M. Catelan, J. Clari\u00e1, N. Cross, &#8230;<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2010NewA...15..433M\" target=\"_blank\" rel=\"noreferrer noopener\">2010, NewA, 15, 433<\/a><\/p>\n\n\n\n<p><strong>Deep census of variable stars in a VLT\/VIMOS field in Carina<\/strong><br><em>P. Pietrukowicz, D. Minniti, J. Fern\u00e1ndez, G. Pietrzy\u0144ski, M. Ru&#8217;\u0131z, W. Gieren, R. D&#8217;\u0131az, M. Zoccali, M. Hempel<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2009A%26A...503..651P\" target=\"_blank\" rel=\"noreferrer noopener\">2009, A&amp;A, 503, 651<\/a><\/p>\n\n\n\n<p><strong>Extragalactic Chemical Abundances: Do H II Regions and Young Stars Tell the Same Story? The Case of the Spiral Galaxy NGC 300<\/strong><br><em>F. Bresolin, W. Gieren, R.-P. Kudritzki, G. Pietrzy\u0144ski, M. Urbaneja, G. Carraro<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2009ApJ...700..309B\" target=\"_blank\" rel=\"noreferrer noopener\">2009, ApJ, 700, 309<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project. Improving the Cosmic Distance Scale<\/strong><br><em>G. Pietrzy\u0144ski, W. Gieren<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2009RMxAC..35..233P\" target=\"_blank\" rel=\"noreferrer noopener\">2009, Revista Mexicana de Astronomia y Astrofisica Conference Series, 35, 233<\/a><\/p>\n\n\n\n<p><strong>The eclipsing LMC star OGLE05155332-6925581: a clue for double periodic variables<\/strong><br><em>R. Mennickent, Z. Ko\u0142aczkowski, G. Michalska, G. Pietrzy\u0144ski, R. Gallardo, L. Cidale, A. Granada, W. Gieren<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2008MNRAS.389.1605M\" target=\"_blank\" rel=\"noreferrer noopener\">2008, MNRAS, 389, 1605<\/a><\/p>\n\n\n\n<p><strong>A catalogue of Be stars in the direction of the Galactic Bulge<\/strong><br><em>B. Sabogal, R. Mennickent, G. Pietrzy\u0144ski, J. Garc&#8217;\u0131a, W. Gieren, Z. Ko\u0142aczkowski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2008A%26A...478..659S\" target=\"_blank\" rel=\"noreferrer noopener\">2008, A&amp;A, 478, 659<\/a><\/p>\n\n\n\n<p><strong>Report on the Third Advanced Chilean School of Astrophysics<\/strong><br><em>W. Gieren, M. Zoccali, I. Saviane, R. M\u00e9ndez, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2007Msngr.127...68G\" target=\"_blank\" rel=\"noreferrer noopener\">2007, Msngr, 127, 68<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project<\/strong><br><em>G. Pietrzy\u0144ski, W. Gieren<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2006MmSAI..77..239P\" target=\"_blank\" rel=\"noreferrer noopener\">2006, MmSAI, 77, 239<\/a><\/p>\n\n\n\n<p><strong>Blue and yellow long-period variables in the direction of the Small Magellanic Cloud<\/strong><br><em>R. Mennickent, L. Cidale, G. Pietrzy\u0144ski, W. Gieren, B. Sabogal<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2006A%26A...457..949M\" target=\"_blank\" rel=\"noreferrer noopener\">2006, A&amp;A, 457, 949<\/a><\/p>\n\n\n\n<p><strong>Spectroscopy of blue and yellow long-period variables in the Small Magellanic Cloud<\/strong><br><em>R.E. Mennickent. L.S. Cidale, G. Pietrzy\u0144ski, W. Gieren, B. Sabogal<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2006RMxAC..26...74M\" target=\"_blank\" rel=\"noreferrer noopener\">2006, Revista Mexicana de Astronomia y Astrofisica Conference Series, 26, 74<\/a><\/p>\n\n\n\n<p><strong>Measuring Improved Distances to Nearby Galaxies: The Araucaria Project<\/strong><br><em>W. Gieren, G. Pietrzy\u0144ski, F. Bresolin, R.-P. Kudritzki, D. Minniti, M. Urbaneja, I. Soszynski, J. Storm, P. Fouque, G. Bono, A. Walker, J. Garcia<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2005Msngr.121...23G\" target=\"_blank\" rel=\"noreferrer noopener\">2005, Msngr, 121, 23<\/a><\/p>\n\n\n\n<p><strong>A survey for OB associations in the Sculptor Group spiral galaxy NGC 7793<\/strong><br><em>G. Pietrzy\u0144ski, K. Ulaczyk, W. Gieren, F. Bresolin, R. Kudritzki<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2005A%26A...440..783P\" target=\"_blank\" rel=\"noreferrer noopener\">2005, A&amp;A, 440, 783<\/a><\/p>\n\n\n\n<p><strong>Be star candidates in the Large Magellanic Cloud: the catalogue and comparison with the Small Magellanic Cloud sample<\/strong><br><em>B. Sabogal, R. Mennickent, G. Pietrzy\u0144ski, W. Gieren<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2005MNRAS.361.1055S\" target=\"_blank\" rel=\"noreferrer noopener\">2005, MNRAS, 361, 1055<\/a><\/p>\n\n\n\n<p><strong>The Araucaria Project. Variable stars outside the Local Group: NGC 300<\/strong><br><em>R. Mennickent, G. Pietrzy\u0144ski, W. Gieren<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2004MNRAS.350..679M\" target=\"_blank\" rel=\"noreferrer noopener\">2004, MNRAS, 350, 679<\/a><\/p>\n\n\n\n<p><strong>The Araucaria project &#8211; improving stellar distance indicators<\/strong><br><em>G. Pietrzy\u0144ski, W. Gieren<\/em><br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2004ASPC..310...87P\" target=\"_blank\" rel=\"noreferrer noopener\">2004, ASPC, 310, 87<\/a><\/p>\n\n\n\n<p><strong>GaBoDS: The Garching-Bonn Deep Survey. I. Anatomy of galaxy clusters in the background of NGC 300<\/strong><br><em>M. Schirmer, T. Erben, P. Schneider, G. Pietrzy\u0144ski, W. Gieren, S. Carpano, A. Micol, F. Pierfederici<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2003A&amp;A...407..869S\" target=\"_blank\" rel=\"noreferrer noopener\">2003, A&amp;A, 407, 869<\/a><\/p>\n\n\n\n<p><strong>Double-periodic blue variables in the Magellanic Clouds<\/strong><br><em>R. Mennickent, G. Pietrzy\u0144ski, M. Diaz, W. Gieren<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2003A&amp;A...399L..47M\" target=\"_blank\" rel=\"noreferrer noopener\">2003, A&amp;A, 399, L47<\/a><\/p>\n\n\n\n<p><strong>Light curve analysis of Be star candidates in the Small Magellanic Cloud<\/strong><br><em>R.E. Mennickent, G. Pietrzy\u0144ski, W. Gieren<br><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2003ASPC..292...89M\" target=\"_blank\" rel=\"noreferrer noopener\">2<\/a><\/em><a href=\"http:\/\/adsabs.harvard.edu\/abs\/2003ASPC..292...89M\" target=\"_blank\" rel=\"noreferrer noopener\">003, ASPC, 292, 89<\/a><\/p>\n\n\n\n<p><strong>Discovery and Quantitative Spectral Analysis of an Ofpe\/WN9 (WN11) Star in the Sculptor Spiral Galaxy NGC 300<\/strong><br><em>F. Bresolin, R.-P. Kudritzki, F. Najarro, W. Gieren, G. Pietrzy\u0144ski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2002ApJ...577L.107B\" target=\"_blank\" rel=\"noreferrer noopener\">2002, ApJ, 577, L107<\/a><\/p>\n\n\n\n<p><strong>On Be star candidates and possible blue pre-main sequence objects in the Small Magellanic Cloud<\/strong><br><em>R. Mennickent, G. Pietrzy\u0144ski, W. Gieren, O. Szewczyk<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2002A&amp;A...393..887M\" target=\"_blank\" rel=\"noreferrer noopener\">2002, A&amp;A, 393, 887<\/a><\/p>\n\n\n\n<p><strong>Photometric Standard Stars in the BVI System in a Wide Field Centered on the Spiral Galaxy NGC 300<\/strong><br><em>G. Pietrzy\u0144ski, W. Gieren, A. Udalski<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2002PASP..114..298P\" target=\"_blank\" rel=\"noreferrer noopener\">2002, PAxSP, 114, 298<\/a><\/p>\n\n\n\n<p><strong>Research in Concepci\u00f3n on globular cluster systems and galaxy formation, and the extragalactic distance scale<\/strong><br><em>W. Gieren, D. Geisler, T. Richtler, G. Pietrzy\u0144ski, B. Dirsch<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2001Msngr.106...15G\" target=\"_blank\" rel=\"noreferrer noopener\">2001, Msngr, 106, 15<\/a><\/p>\n\n\n\n<p><strong>A Catalog of OB Associations in the spiral galaxy NGC 300<\/strong><br><em>G. Pietrzy\u0144ski, W. Gieren, P. Fouqu\u00e9, F. Pont<\/em><br><a aria-label=\" (opens in a new tab)\" href=\"https:\/\/ui.adsabs.harvard.edu\/?#abs\/2001A&amp;A...371..497P\" target=\"_blank\" rel=\"noreferrer noopener\">2001, A&amp;A, 371, 497<\/a><\/p>\n\n\n\n<div class=\"su-divider su-divider-style-default\" style=\"margin:16px 0;border-width:1px;border-color:#275b12\"><a href=\"#\" style=\"color:#275b12\">Go to top<\/a><\/div>\n\n\n\n<div class=\"su-spacer\" style=\"height:10px\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>This page provides information on papers published by members of the Araucaria Project sorted by a star type. Also sort by: See&nbsp;also astro-ph papers citing or referring to the Araucaria Project. Late-type eclipsing binariesEarly-type&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-224","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/pages\/224","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/comments?post=224"}],"version-history":[{"count":18,"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/pages\/224\/revisions"}],"predecessor-version":[{"id":3119,"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/pages\/224\/revisions\/3119"}],"wp:attachment":[{"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/media?parent=224"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}