This page provides information on papers published by members of the Araucaria Project sorted by publication date.
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See also astro-ph papers citing or referring to Araucaria.
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2024
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
M. Taormina, R.P. Kudritzki, B. Pilecki, G. Pietrzyński, I.B. Thompson, J. Puls,M. Górski, B. Zgirski, D. Graczyk, W. Gieren, G. Hajdu
2024, ApJ 967, 64
The orbital parameters of the δ Cep inner binary system determined using 2019 HARPS-N spectroscopic data
N. Nardetto, V. Hocdé, P. Kervella, A. Gallenne, W. Gieren, D. Graczyk, A. Merand, M. Rainer, J. Storm, G. Pietrzyński, B. Pilecki, E. Poretti, M. Bailleul, G. Bras, A. Afanasiev
2024, A&A 684L, 9
Corrigendum
The Baade-Wesselink projection factor of RR Lyrae stars. Calibration from OHP/SOPHIE spectroscopy and Gaia DR3 parallaxes
G. Bras, P. Kervella, B. Trahin, P. Wielgórski, B. Zgirski, A. Mérand, N. Nardetto, A. Gallenne, V. Hocdé, L. Breuval, A. Afanasiev, G. Pietrzyński, W. Gieren
2024, A&A 684A, 126
Cepheids with giant companions. II. Spectroscopic confirmation of nine new double-lined binary systems composed of two Cepheids
B. Pilecki, I.B. Thompson, F. Espinoza-Arancibia, G. Hajdu, W. Gieren, M. Taormina, G. Pietrzyński, W. Narloch, G. Bono, A. Gallenne, P. Kervella, P. Wielgórski, B. Zgirski, D. Graczyk, P. Karczmarek, N.R. Evans
2024, arXiv:2403.12390
2023
Long-period maser-bearing Miras in the Galactic center. Period-luminosity relations and extinction estimates
M. Lewis, R. Bhattacharya, L.O. Sjouwerman, Y.M. Pihlström, G. Pietrzyński, R. Sahai, P. Karczmarek, M. Górski
2023, A&A, 677, 153
Period-Luminosity Relations for Galactic Classical Cepheids in the Sloan Bands
W. Narloch, G. Hajdu, G. Pietrzyński, W. Gieren, P. Wielgórski, B. Zgirski, P. Karczmarek, M. Górski, D. Graczyk
2023, ApJ, 953, 14
New Near-infrared Period-Luminosity-Metallicity Relations for Galactic RR Lyrae Stars Based on Gaia EDR3 Parallaxes
B. Zgirski, G. Pietrzyński, M. Górski, W. Gieren, P. Wielgórski, P. Karczmarek, G. Hajdu, M. Lewis, R. Chini, D. Graczyk, M. Kałuszyński, W. Narloch, B. Pilecki, G. García Rojas, K. Suchomska, M. Taormina
2023, ApJ, 951, 114
Synthetic Population of Binary Cepheids. II. The effect of companion light on the extragalactic distance scale
P. Karczmarek, G. Hajdu, G. Pietrzyński, W. Gieren, W. Narloch, R. Smolec, G. Wiktorowicz, K. Belczynski
2023, ApJ 950, 182
Modelling photometric reverberation mapping data for the next generation of big data surveys. Quasar accretion discs sizes with the LSST
F. Pozo Nuñez, C. Bruckmann, S. Deesamutara, B. Czerny, S. Panda, A. P. Lobban, G. Pietrzyński, K. L. Polsterer
2023, MNRAS, 522, 2002
The Araucaria project: High-precision orbital parallaxes and masses of binary stars. I. VLTI/GRAVITY observations of ten double-lined spectroscopic binaries
A. Gallenne, A. Mérand, A. P. Kervella, D. Graczyk, G. Pietrzyński, W. Gieren, B. Pilecki
2023, A&A, 672A, 119
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
N. Nardetto, W. Gieren, J. Storm, V. Hocde, G. Pietrzyński, P. Kervella, A. Merand, A. Gallenne, D. Graczyk, B. Pilecki, E. Poretti, M. Rainer, B. Zgirski, P. Wielgórski, G. Hajdu, M. Górski, P. Karczmarek, W. Narloch, M. Taormina
2023, A&A, 671A, 14
Metallicity estimations of MW, SMC, and LMC classical Cepheids from the shape of the V- and I-band light curves
V. Hocdé, R. Smolec, P. Moskalik, O. Ziółkowska, R. Singh Rathour
2023, A&A 671, A157
2022
Discovery of a Binary-origin Classical Cepheid in a Binary System with a 59 day Orbital Period
B. Pilecki, I.B. Thompson, F. Espinoza-Arancibia, R.I. Anderson, W. Gieren, W. Narloch, J. Minniti, G. Pietrzyński, M. Taormina, G. Bono, G. Hajdu
2022, ApJL 940, 48
Evolved eclipsing binary systems in the Galactic bulge: Precise physical and orbital parameters of OGLE-BLG-ECL-305487 and OGLE-BLG-ECL-116218
K. Suchomska, D. Graczyk, C. Gałan, O. Ziółkowska, R. Smolec, G. Pietrzyński, W. Gieren, S. Villanova, M. Górski, I.B. Thompson, P. Wielgórski, B. Zgirski, P. Karczmarek, B. Pilecki, M. Taormina, W. Narloch, G. Hajdu, M.O. Lewis, M. Kałuszyński, G. Rojas García
2022, A&A 668, A30
Surface brightness-colour relations of dwarf stars from detached eclipsing binaries. I. Calibrating sample
D. Graczyk, G. Pietrzyński, C. Galan, J. Southworth, W. Gieren, M. Kałuszyński, B. Zgirski, A. Gallenne, M. Górski, G. Hajdu, P. Karczmarek, P. Kervella, P.F.L. Maxted, N. Nardetto, W. Narloch, B. Pilecki, W. Pych, G. Rojas García, J. Storm, K. Suchomska, …
2022, A&A, 666, A128
Metallicities and ages for star clusters and their surrounding fields in the Large Magellanic Cloud
W. Narloch, G. Pietrzyński, W. Gieren, A.E. Piatti, P. Karczmarek, M. Górski, D. Graczyk, R. Smolec, G. Hajdu, K. Suchomska, B. Zgirski, P. Wielgórski, B. Pilecki, M. Taormina, M. Kałuszyński, W. Pych, G. Rojas García, M.O. Lewis
2022, A&A, 666, A80
Properties of RR Lyrae variables in binary systems: towards a first-time mass measurement
G. Hajdu, G. Pietrzyński, M. Catelan, J. Jurcsik, P. Karczmarek, B. Pilecki, I.B. Thompson
2022, Bulletin of the American Astronomical Society, Vol. 54, No. 6 e-id 2022n6i415p04
Synthetic Population of Binary Cepheids. I. The Effect of Metallicity and Initial Parameter Distribution on Characteristics of Cepheids’ Companions
P. Karczmarek, R. Smolec, G. Hajdu, G. Pietrzyński, W. Gieren, W. Narloch, G. Wiktorowicz, K. Belczynski
2022, ApJ, 930, 65
An absolute calibration of the near-infrared Period-Luminosity Relations of Type II Cepheids in the Milky Way and in the Large Magellanic Cloud
P. Wielgórski, G. Pietrzyński, B. Pilecki, W. Gieren, B. Zgirski, M. Górski, G. Hajdu, W. Narloch, P. Karczmarek, R. Smolec, P. Kervella, J. Storm, A. Gallenne, L. Breuval, M. Lewis, M. Kałuszyński, D. Graczyk, W. Pych, K. Suchomska, M. Taormina, …
2022, ApJ, 927, 89
2021
The Araucaria Project: Improving the cosmic distance scale
The Araucaria Project: G. Pietrzyński, W. Gieren, P. Karczmarek, M. Górski, B. Zgirski, P. Wielgórski, 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. Gałan, M. Lewis, R. Chini
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’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, Pułtusk 2021. ISBN: 978-83-66856-07-3. ArXiv:2305.17247
Progress on the calibration of surface brightness-color relations for early- and late-type stars
A. Salsi, N. Nardetto, D. Mourard, D. Graczyk, M. Taormina, O. Creevey, V. Hocdé, F. Morand, K. Perraut, G. Pietrzynski, G.H. Schaefer
2021, A&A, 652, A26
Inspecting the Cepheid Distance Ladder: the Hubble Space Telescope Distance to the SN Ia Host Galaxy NGC 5584
B. Javanmardi, A. Mérand, P. Kervella, L. Breuval, A. Gallenne, N. Nardetto, W. Gieren, G. Pietrzyński, V. Hocdé, S. Borgniet
2021, ApJ, 911, 12
Studies of RR Lyrae Variables in Binary Systems. I. Evidence of a Trimodal Companion Mass Distribution
G. Hajdu, G. Pietrzyński, J. Jurcsik, M. Catelan, P. Karczmarek, B. Pilecki, I. Soszyński, A. Udalski, I.B. Thompson
2021, ApJ, 915, 50
The Araucaria Project. Distances to Nine Galaxies Based on a Statistical Analysis of their Carbon Stars (JAGB Method)
B. Zgirski, G. Pietrzyński, W. Gieren, M. Górski, P. Wielgórski, P. Karczmarek, F. Bresolin, P. Kervella, R.-P. Kudritzki, J. Storm, D. Graczyk, G. Hajdu, W. Narloch, B. Pilecki, K. Suchomska, M. Taormina
2021, ApJ, 916, 19 — more information
Mid-infrared circumstellar emission of the long-period Cepheid ℓ Carinae resolved with VLTI/MATISSE
V. Hocdé, N. Nardetto, A. Matter, E. Lagadec, A. Mérand, P. Cruzalèbes, A. Meilland, F. Millour, B. Lopez, P. Berio, G. Weigelt, R. Petrov, J.W. Isbell, W. Jaffe, P. Kervella, A. Glindemann, M. Schöller, F. Allouche, A. Gallenne, A. Domiciano de Souza, …
2021, A&A 651, A92
IR Excess of Classical Cepheids Modeled by a Thin Shell of Ionized Gas
V. Hocdé, N. Nardetto, E. Lagadec, G. Niccolini, A. Domiciano de Souza, A. Merand, P. Kervella
2021, ASPC 529, 271
Extended envelopes around Galactic Cepheids. V. Multi-wavelength and time-dependent analysis of IR excess
A. Gallenne, A. Mérand, P. Kervella, G. Pietrzyński, W. Gieren, V. Hocdé, L. Breuval, N. Nardetto, E. Lagadec
2021, A&A, 651, A113
The Influence of Metallicity on the Leavitt Law from Geometrical Distances of Milky Way and Magellanic Cloud Cepheids
L. Breuval, P. Kervella, P. Wielgórski, W. Gieren, D. Graczyk, B. Trahin, G. Pietrzyński, F. Arenou, B. Javanmardi, B. Zgirski
2021, ApJ, 913, 38
The surface brightness-colour relations based on eclipsing binary stars and calibrated with Gaia EDR3
D. Graczyk, G. Pietrzyński, C. Gałan, W. Gieren, A. Tkachenko, R.I. Anderson, A. Gallenne, M. Górski, G. Hajdu, M. Kałuszyński, P. Karczmarek, P. Kervella, P.F.L. Maxted, N. Nardetto, W. Narloch, K. Pavlovski, B. Pilecki, W. Pych, J. Southworth, J. Storm, …
2021, A&A, 649, A109
Cepheids with Giant Companions. I. Revealing a Numerous Population of Double-lined Binary Cepheids
B. Pilecki, G. Pietrzyński, R.I. Anderson, W. Gieren, M. Taormina, W. Narloch, N.R. Evans, J. Storm
2021, ApJ, 910, 118
Metallicities and ages for 35 star clusters and their surrounding fields in the Small Magellanic Cloud
W. Narloch, G. Pietrzyński, W. Gieren, A. E. Piatti, M. Górski, P. Karczmarek, D. Graczyk, K. Suchomska, B. Zgirski, P. Wielgórski, B. Pilecki, M. Taormina, M. Kałuszyński, W. Pych, G. Hajdu, G. Rojas García
2021, A&A, 647, A135 — database
The Araucaria Project: Deep Near-infrared Photometric Maps of Local and Sculptor Group Galaxies. I. Carina, Fornax, and Sculptor
P. Karczmarek, G. Pietrzyński, W. Gieren, W. Narloch, G. Hajdu, G. Rojas García, M. Kałuszyński, M. Górski, K. Suchomska, D. Graczyk, B. Pilecki, P. Wielgórski, B. Zgirski, M. Taormina, M. Sadh
2021, ApJS, 253, 42 — database
2020
A Distance Determination to the Small Magellanic Cloud with an Accuracy of Better than Two Percent Based on Late-type Eclipsing Binary Stars
D. Graczyk, G. Pietrzyński, I.B. Thompson, W. Gieren, B. Zgirski, S. Villanova, M. Górski, P. Wielgórski, P. Karczmarek, W. Narloch, B. Pilecki, M. Taormina, R. Smolec, K. Suchomska, A. Gallenne, N. Nardetto, J. Storm, R.-P. Kudritzki, M. Kałuszyński, W. Pych
2020, ApJ, 904, 13
The impact of binary Cepheids on the distance determinations
P. Karczmarek, G. Wiktorowicz, G. Pietrzyński, K. Belczyński
2020, Proceedings of the Polish Astronomical Society, 10, 40
The Milky Way Cepheid Leavitt law based on Gaia DR2 parallaxes of companion stars and host open cluster populations
L. Breuval, P. Kervella, R.I. Anderson, A.G. Riess, F. Arenou, B. Trahin, A. Mérand, A. Gallenne, W. Gieren, G. Pietrzyński, N. Nardetto, B. Javanmardi, V. Hocdé
2020, A&A, 643, A115
Empirical calibration of the reddening maps in the Magellanic Clouds
M. Górski, B. Zgirski, G. Pietrzyński, W. Gieren, P. Wielgórski, D. Graczyk, R.-P. Kudritzki, B. Pilecki, W. Narloch, P. Karczmarek, K. Suchomska, M. Taormina
2020, ApJ, 889, 179 — more information — reddening maps
The Araucaria Project Establishes the Most Precise Benchmark for Cosmic Distances
G. Pietrzyński, D. Graczyk, A. Gallenne, W. Gieren, I. Thompson, B. Pilecki, P. Karczmarek, M. Górski, K. Suchomska, M. Taormina, B. Zgirski, P. Wielgórski, N. Nardetto, P. Kervella, F. Bresolin, R.-P. Kudritzki, J. Storm, R. Smolec, W. Narloch, M. Kałuszyński, S. Villanova
2020, Msngr, 179, 24
Calibrating the surface brightness – color relation for late-type red giants stars in the visible domain using VEGA/CHARA interferometric observations
N. Nardetto, A. Salsi, D. Mourard, V. Hocdé, K. Perraut, A. Gallenne, A. Mérand, D. Graczyk, G. Pietrzynski, W. Gieren, P. Kervella, R. Ligi, A. Meilland, F. Morand, P. Stee, I. Tallon-Bosc, T. ten Brummelaar
2020, A&A, 639, A67
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
M. Taormina, R.-P. Kudritzki, J. Puls, B. Pilecki, E. Sextl, G. Pietrzyński, M.A. Urbaneja, W. Gieren
2020, ApJ, 890, 137
Pulsating chromosphere of classical Cepheids. Calcium infrared triplet and Hα profile variations
V. Hocdé, N. Nardetto, S. Borgniet, E. Lagadec, P. Kervella, A. Mérand, N. Evans, D. Gillet, Ph. Mathias, A. Chiavassa, A. Gallenne, L. Breuval, B. Javanmardi
2020, A&A 641, A74
A thin shell of ionized gas as the explanation for infrared excess among classical Cepheids
V. Hocdé, N. Nardetto, E. Lagadec, G. Niccolini, A. Domiciano de Souza, A. Mérand, P. Kervella, A. Gallenne, M. Marengo, B. Trahin, W. Gieren, G. Pietrzyński, S. Borgniet, L. Breuval, B. Javanmardi
2020, A&A, 633, 47
2019
A Survey for High-Mass Eclipsing Binaries
F. Pozo Nuñez, R. Chini, A. Barr Domínguez, Ch. Fein, M. Hackstein, G. Pietrzyński; M. Murphy
2019, MNRAS, 490, 5147
Towards early-type eclipsing binaries as extragalactic milestones: I. Physical parameters of OGLE-LMC-ECL-22270 and OGLE-LMC-ECL-06782
M. Taormina, G. Pietrzyński, B. Pilecki, R.-P. Kudritzki, I. B. Thompson, D. Graczyk, W. Gieren, N. Nardetto, M. Górski, K. Suchomska, B. Zgirski, P. Wielgórski, P. Karczmarek, W. Narloch
2019, ApJ, 886, 111
The Araucaria Project: High-precision orbital parallax and masses of eclipsing binaries from infrared interferometry
A. Gallenne, G. Pietrzyński, D. Graczyk, B. Pilecki, J. Storm, N. Nardetto, M. Taormina, W. Gieren, A. Tkachenko, P. Kervella, A. Mérand, M. Weber
2019, A&A, 632, 31
Consistent radial velocities of classical Cepheids from the cross-correlation technique
S. Borgniet, P. Kervella, N. Nardetto, A. Gallenne, A. Mérand, R.I. Anderson, J. Aufdenberg, L. Breuval, W. Gieren, V. Hocdé, B. Javanmardi, E. Lagadec, G. Pietrzyński, B. Trahin
2019, A&A, 631, 37
Candidates for non-pulsating stars located in the Cepheid instability strip in the Large Magellanic Cloud based on Strömgren photometry
W. Narloch, G. Pietrzyński, Z. Kołaczkowski, R. Smolec, M. Górski, K. Kubiak, A. Udalski, I. Soszyński, D. Graczyk, W. Gieren, P. Karczmarek, B. Zgirski, P. Wielgórski, K. Suchomska, B. Pilecki, M. Taormina, M. Kałuszyński
2019, MNRAS, 489, 3285 — more information
A distance to the Large Magellanic Cloud that is precise to one per cent
G. Pietrzyński, D. Graczyk, A. Gallenne, W. Gieren, I.B. Thompson, B. Pilecki, P. Karczmarek, M. Górski, K. Suchomska, M. Taormina, B. Zgirski, P. Wielgórski, Z. Kołaczkowski, P. Konorski, S. Villanova, N. Nardetto, P. Kervella, F. Bresolin, R.-P. Kudritzki, J. Storm, …
2019, Nature, 567, 200 — more information
Multiplicity of Galactic Cepheids and RR Lyrae stars from Gaia DR2. I. Binarity from proper motion anomaly
P. Kervella, A. Gallenne, N.R. Nancy, L. Szabados, F. Arenou, A. Mérand, Y. Proto, P. Karczmarek, N. Nardetto, W. Gieren, G. Pietrzyński
2019, A&A, 623A, 116
Multiplicity of Galactic Cepheids and RR Lyrae stars from Gaia DR2. II. Resolved common proper motion pairs
P. Kervella, A. Gallenne, N.R. Evans, L. Szabados, F. Arenou, A. Mérand, N. Nardetto, W. Gieren, G. Pietrzyński
2019, A&A, 623A, 117
Multiplicity of Galactic Cepheids from long-baseline interferometry. IV. New detected companions from MIRC and PIONIER observations
A. Gallenne, P. Kervella, S. Borgniet, A. Mérand, G. Pietrzyński, W. Gieren, J.D. Monnier, G.H. Schaefer, N.R. Evans, R.I. Anderson, F. Baron, R.M. Roettenbacher, P. Karczmarek
2019, A&A, 622A, 164
Accurate stellar parameters and distance to two evolved eclipsing binary systems, OGLE-BLG-ECL-123903 and OGLE-BLG-ECL-296596, towards the Galactic bulge
K. Suchomska, D. Graczyk, G. Pietrzyński, W. Gieren, J. Ostrowski, R. Smolec, A. Tkachenko, M. Górski, P. Karczmarek, P. Wielgórski, B. Zgirski, I.B. Thompson, S. Villanova, B. Pilecki, M. Taormina, Z. Kołaczkowski, W. Narloch, I. Soszyński
2019, A&A, 621A, 93
Metallicity estimates of young clusters in the Magellanic Clouds from Strömgren photometry of supergiant stars
A.E. Piatti, G. Pietrzyński, W. Narloch, M. Górski, D. Graczyk
2019, MNRAS, 483, 4766
Testing Systematics of Gaia DR2 Parallaxes with Empirical Surface Brightness: Color Relations Applied to Eclipsing Binaries
D. Graczyk, G. Pietrzyński, W. Gieren, J. Storm, N. Nardetto, A. Gallenne, P.F.L. Maxted, P. Kervella,Z. Kołaczkowski, P. Konorski, B. Pilecki, B. Zgirski, M. Górski, K. Suchomska, P. Karczmarek, M. Taormina, P. Wielgórski, W. Narloch, R. Smolec, R. Chini, …
2019, ApJ, 872, 85 — more information
2018
The Araucaria Project: Multi-band Calibrations of the TRGB Absolute Magnitude
M. Górski, G. Pietrzyński, W. Gieren, D. Graczyk, K. Suchomska, P. Karczmarek, R.E. Cohen, B. Zgirski, P. Wielgórski, B. Pilecki, M. Taormina, Z. Kołaczkowski, W. Narloch
2018, AJ, 156, 278
Fundamental properties of red-clump stars from long-baseline H-band interferometry
A. Gallenne, G. Pietrzyński, D. Graczyk, N. Nardetto, A. Mérand, P. Kervella, W. Gieren, S. Villanova, R.E. Mennickent, B. Pilecki
2018, A&A, 616, 68
The effect of metallicity on Cepheid period-luminosity relations from a Baade-Wesselink analysis of Cepheids in the Milky Way and Magellanic Clouds
W. Gieren, J. Storm, P. Konorski, M. Górski, B. Pilecki, I.B. Thompson, G. Pietrzyński, D. Graczyk, T.G. Barnes, P. Fouqué, N. Nardetto, A. Gallenne, P. Karczmarek, K. Suchomska, P. Wielgórski, M. Taormina, B. Zgirski
2018, A&A, 620, 99 — more information
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
B. Pilecki, A. Dervișoğlu, W. Gieren, R. Smolec, I. Soszyński, G. Pietrzyński, I.B. Thompson, M. Taormina
2018, ApJ, 868, 30
A Geometrical 1% Distance to the Short-period Binary Cepheid V1334 Cygni
A. Gallenne, P. Kervella, N.R. Evans, C.R. Proffitt, J.D. Monnier, A. Mérand, E. Nelan, E. Winston, G. Pietrzyński, G. Schaefer, W. Gieren, R.I. Anderson, S. Borgniet, S. Kraus, R.M. Roettenbacher, F. Baron, B. Pilecki, M. Taormina, D. Graczyk, N. Mowlavi, …
2018, ApJ, 876, 121
Precise distances to red giant stars with seismic data using the near-IR surface-brightness relation
J. Storm, D. Graczyk, M. Valentini, F. Anders, C. Chiappini, W. Gieren, G. Pietrzyński
2018, IAUS, 334, 368
The Araucaria Project. The Distance to the Sculptor Group Galaxy NGC 7793 from Near-Infrared Photometry of Cepheid Variables
B. Zgirski, W. Gieren, G. Pietrzyński, P. Karczmarek, M. Górski, P. Wielgórski, W. Narloch, D. Graczyk, P.-R. Kudritzki, F. Bresolin
2018, Proceedings of the Polish Astronomical Society, 6, 329
The Metallicity Effect on Cepheid Absolute Magnitudes
P. Wielgórski, G. Pietrzyński, W. Gieren, M. Górski, R.-P. Kudritzki, B. Zgirski, F. Bresolin, J. Storm, N. Matsunaga, D. Graczyk, I. Soszyński
2018, Proceedings of the Polish Astronomical Society, 6, 327
Toward a Universal Period-p-factor Relation
A. Gallenne, P. Kervella, A. Mérand G. Pietrzyński, W. Gieren, N. Nardetto
2018, Proceedings of the Polish Astronomical Society, 6, 290
Classical Pulsators in Eclipsing Binary Systems
G. Pietrzyński
2018, Proceedings of the Polish Astronomical Society, 6, 229
The Late-type Eclipsing Binaries in the Large Magellanic Cloud: Catalog of Fundamental Physical Parameters
D. Graczyk, G. Pietrzyński, I.B. Thompson, W. Gieren, B. Pilecki, P. Konorski, S. Villanova, M. Górski, K. Suchomska, P. Karczmarek, K. Stępień, J. Storm, M. Taormina, Z. Kołaczkowski, P. Wielgórski, W. Narloch, B. Zgirski, A. Gallenne, J. Ostrowski, R. Smolec, …
2018, ApJ, 860, 1
The Araucaria Project: High-precision Cepheid Astrophysics from the Analysis of Variables in Double-lined Eclipsing Binaries
B. Pilecki, W. Gieren, G. Pietrzyński, I.B. Thompson, R. Smolec, D. Graczyk, M. Taormina, A. Udalski, J. Storm, N. Nardetto, A. Gallenne, P. Kervella, I. Soszyński, M. Górski, P. Wielgórski, K. Suchomska, P. Karczmarek, B. Zgirski
2018, ApJ, 862, 43 — more information
Optical interferometry and Gaia parallaxes for a robust calibration of the Cepheid distance scale
P. Kervella, A. Mérand, A. Gallenne, B. Trahin, S. Borgniet, G. Pietrzyński, N. Nardetto, W. Gieren
2018, IAUS, 330, 305
2017
The Araucaria Project. The Distance to the Sculptor Group Galaxy NGC 7793 from Near-infrared Photometry of Cepheid Variables
B. Zgirski, W. Gieren, G. Pietrzyński, P. Karczmarek, M. Górski, P. Wielgórski, W. Narloch, D. Graczyk, R.-P. Kudritzki, F. Bresolin
2017, ApJ, 847, 88
A Precision Determination of the Effect of Metallicity on Cepheid Absolute Magnitudes in VIJHK Bands from Magellanic Cloud Cepheids
P. Wielgórski, G. Pietrzyński, W. Gieren, M. Górski, R.-P. Kudritzki, B. Zgirski, F. Bresolin, J. Storm, N. Matsunaga, D. Graczyk, I. Soszyński
2017, ApJ, 842, 116
Mass and p-factor of the type II Cepheid OGLE-LMC-T2CEP-098 in a binary system
B. Pilecki, W. Gieren, R. Smolec, G. Pietrzyński, I. B. Thompson, R. I. Anderson, G. Bono, I. Soszyński, P. Kervella, N. Nardetto, M. Taormina, K. Stępień, P. Wielgórski
2017, ApJ, 842, 110 — more information — get data
The occurrence of Binary Evolution Pulsators in the classical instability strip of RR Lyrae and Cepheid variables.
P. Karczmarek, G. Wiktorowicz, K. Iłkiewicz, R. Smolec, K. Stępień, G. Pietrzyński, W. Gieren, K. Belczynski
2017, MNRAS, 466, 2842 — more information — get data
The surface brightness-color relations based on eclipsing binary stars: toward precision better than 1% in angular diameter predictions
D. Graczyk, P. Konorski, G. Pietrzyński, W. Gieren, J. Storm, N. Nardetto, A. Gallenne, P. F. L. Maxted, P. Kervella, Z. Kołaczkowski
2017, ApJ, 837, 7
HARPS-N high spectral resolution observations of Cepheids I. The Baade-Wesselink projection factor of delta-Cep revisited
N. Nardetto, E. Poretti, M. Rainer, A. Fokin, P. Mathias, R.I. Anderson, A. Gallenne, W. Gieren, D. Graczyk, P. Kervella, A. Mérand, D. Mourard, H. Neilson, G. Pietrzyński, B. Pilecki, J. Storm
2017, A&A, 597, A73
Observational calibration of the projection factor of Cepheids. IV. Period-projection factor relation of Galactic and Magellanic Cloud Cepheids
A. Gallenne, P. Kervella, A. Mérand, G. Pietrzyński, W. Gieren, N. Nardetto, B. Trahin
2017, A&A, 608A, 18
LMC Blue Supergiant Stars and the Calibration of the Flux-weighted Gravity-Luminosity Relationship
M.A. Urbaneja, R.-P. Kudritzki, W. Gieren, G. Pietrzyński, F. Bresolin, N. Przybilla
2017, AJ, 154, 102
The Araucaria Project: The Distance to the Fornax Dwarf Galaxy from Near-infrared Photometry of RR Lyrae Stars
P. Karczmarek, G. Pietrzyński, M. Górski, W. Gieren, D. Bersier
2017, AJ, 154, 263
Physical properties of the first spectroscopically confirmed red supergiant stars in the Sculptor Group galaxy NGC 55
L.R. Patrick, C.J. Evans, B. Davies, R.-P. Kudritzki, A.M.N. Ferguson, M. Bergemann, G. Pietrzyński, O. Turner
2017, MNRAS, 468, 492
Observational calibration of the projection factor of Cepheids III. The long-period Galactic Cepheid RS Puppis
P. Kervella, B. Trahin, H. E. Bond, A. Gallenne, L. Szabados, A. Mérand, J. Breitfelder, J. Dailloux, R. I. Anderson, P. Fouqué, W. Gieren, N. Nardetto, G. Pietrzyński
2017, A&A, 600, 127
The Araucaria Project. The distance to the Sculptor group galaxy NGC 7793 from near-infrared photometry of Cepheid variables
B. Zgirski, W. Gieren, G. Pietrzyński, P. Karczmarek, M. Górski, D. Graczyk, B. Pilecki, M. Taormina, K. Suchomska, P. Wielgórski, P. Konorski
2017, EPJ Web of Conferences, 152, 07010
Cepheids and its dependence on metallicity
P. Wielgórski, G. Pietrzyński, W. Gieren
2017, EPJ Web of Conferences, 152, 07011
2016
A Spectroscopic Study of Blue Supergiant Stars in the Sculptor Galaxy NGC 55: Chemical Evolution and Distance
R.-P. Kudritzki, N. Castro, M. A. Urbaneja, I.-T. Ho, F. Bresolin, W. Gieren, G. Pietrzyński, N. Przybilla
2016, ApJ, 829, 70K
Young stars and ionized nebulae in M83: comparing chemical abundances at high metallicity
F. Bresolin, R.-P. Kudritzki, M. A. Urbaneja, W. Gieren, I.-T. Ho, G. Pietrzyński
2016, ApJ, 830, 64
A solar twin in the eclipsing binary LL Aquarii
D. Graczyk, R. Smolec, K. Pavlovski, J. Southworth, G. Pietrzyński, P. F. L. Maxted, P. Konorski, W. Gieren, B. Pilecki, M. Taormina, K. Suchomska, P. Karczmarek, M. Górski, P. Wielgórski, R.I. Anderson
2016, A&A, 594, 92 — more information
Multiplicity of Galactic Cepheids from long-baseline interferometry III. Sub-percent limits on the relative brightness of a close companion of delta-Cephei
A. Gallenne, A. Merand, P. Kervella, J. D. Monnier, G. H. Schaefer, R. M. Roettenbacher, W. Gieren, G. Pietrzyński, H. McAlister, T. ten Brummelaar, J. Sturmann, L. Sturmann, N. Turner, R.I. Anderson
2016, MNRAS, 461, 1451
VEGA/CHARA interferometric observations of Cepheids. I. A resolved structure around the prototype classical Cepheid delta-Cep in the visible spectral range
N. Nardetto, A. Mérand, D. Mourard, J. Storm, W. Gieren, P. Fouqué, A. Gallenne, D. Graczyk, P. Kervella, H. Neilson, G. Pietrzyński, B. Pilecki, J. Breitfelder, P. Berio, M. Challouf, J.-M. Clausse, R. Ligi, P. Mathias, A. Meilland, K. Perraut, …
2016, A&A, 593, A45
The Araucaria Project: On the Tip of the Red Giant Branch Distance Determination to the Magellanic Clouds
M. Górski, G. Pietrzyński, W. Gieren, M. Catelan, B. Pilecki, P. Karczmarek, K Suchomska, D. Graczyk, P. Konorski, B. Zgirski, P. Wielgórski
2016, AJ, 151, 167
Orbital and physical parameters, and the distance ef the eclipsing binary system OGLE-LMC-ECL-25658 in the Large Magellanic Cloud
S.S. Elgueta, D. Graczyk, W. Gieren, G. Pietrzyński, I.B. Thompson, P. Konorski, B. Pilecki, S. Villanova, A. Udalski, I. Soszynski, K. Suchomska, P. Karczmarek, M. Górski, P. Wielgórski
2016, AJ, 152, 29
The Araucaria Project: High-precision orbital parallax and masses of the eclipsing binary TZ Fornacis
A. Gallenne, G. Pietrzyński, D. Graczyk, P. Konorski, P. Kervella, A. Mérand, W. Gieren, R. I. Anderson, S. Villanova
2016, A&A, 586, A35
2015
The Araucaria Project: A study of the classical Cepheid in the eclipsing binary system OGLE LMC562.05.9009 in the Large Magellanic Cloud
W. Gieren, B. Pilecki, G. Pietrzyński, D. Graczyk, A. Udalski, I. Soszynski, I.B. Thompson, P.G. Prada Moroni, R. Smolec, P. Konorski, M. Górski, P. Karczmarek, K. Suchomoska, M. Taormina, A. Gallenne, J. Storm, B. Giuseppe, M. Catalan, M. Szymański, …
2015, ApJ, 815, 28 — more information — get data
The Araucaria Project: The Distance to the Carina Dwarf Galaxy from Infrared Photometry of RR Lyrae Stars
P. Karczmarek, G. Pietrzyński, W. Gieren, K. Suchomska, P. Konorski, M. Górski, B. Pilecki, D. Graczyk, P. Wielgórski
2015, AJ, 150, 90 — more information
The Araucaria project. Precise physical parameters of the eclipsing binary IO Aquarii
D. Graczyk, P.F.L. Maxted, G. Pietrzyński, B. Pilecki, P. Konorski, W. Gieren, J. Storm, A. Gallenne, R.I. Anderson, K. Suchomska, R.G. West, D. Pollacco, F. Faedi, G. Pojmański
2015, A&A, 581, 106
Robust high-contrast companion detection from interferometric observations
A. Gallenne, A. Mérand, P. Kervella, J. D. Monnier, G.H. Schaefer, F. Baron, J. Breitfelder, J.B. Le Bouquin, R.M. Roettenbacher, W. Gieren, G. Pietrzyński, H. McAlister, T. ten Brummelaar, J. Sturmann, L. Sturmann, N. Turner, S. Ridgway, S. Kraus
2015, A&A, 579, A68
Theoretical impact of fast rotation on calibrating the surface brightness-color relation for early-type stars
M. Challouf, N. Nardetto, A. Domiciano de Souza, D. Mourard, H. Aroui, P. Stee, O. Delaa, D. Graczyk, G. Pietrzyński, W. Gieren
2015, A&A, 579, A107
The Araucaria Project: The First-Overtone Classical Cepheid in the Eclipsing System OGLE-LMC-CEP-2532
B. Pilecki, D. Graczyk, W. Gieren, G. Pietrzyński, I.B. Thompson, R. Smolec, A. Udalski, I. Soszynski, P. Konorski, M. Taormina, A. Gallenne, D. Minniti, M. Catelan
2015, ApJ, 806, 29 — more information — get data
The Araucaria Project. Accurate stellar parameters and distance to evolved eclipsing binary ASAS J180057-2333.8 in Sagittarius Arm
K. Suchomska, D. Graczyk, R. Smolec, G. Pietrzyński, W. Gieren, K. Stępień, P. Konorski, B. Pilecki, S. Villanova, I.B. Thompson, M. Górski, P. Karczmarek, P. Wielgórski, R.I. Anderson
2015, MNRAS, 451, 651
Orbital and physical parameters of eclipsing binaries from the ASAS catalogue – VIII. The totally eclipsing double-giant system HD 187669
K. Hełminiak, D. Graczyk, M. Konacki, B. Pilecki, M. Ratajczak, G. Pietrzyński, P. Sybilski, S. Villanova, W. Gieren, G. Pojmański, P. Konorski, K. Suchomska, D. Reichart, K. Ivarsen, J. Haislip, A. LaCluyze
2015, MNRAS, 448, 1945
New NIR light-curve templates for classical Cepheids
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. Pietrzyński, F. Primas, …
2015, A&A, 576, A30
2014
Improving the surface brightness-color relation for early-type stars using optical interferometry
M. Challouf, N. Nardetto, D. Mourard, D. Graczyk, H. Aroui, O. Chesneau, O. Delaa, G. Pietrzyński, 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, …
2014, A&A, 570, A104
Searching for visual companions of close Cepheids. VLT/NACO lucky imaging of Y Oph, FF Aql, X Sgr, W Sgr, and η Aql
A. Gallenne, P. Kervella, A. Mérand, N. Evans, J. Girard, W. Gieren, G. Pietrzyński
2014, A&A, 567, A60
The Araucaria Project. OGLE-LMC-CEP-1718: An Exotic Eclipsing Binary System Composed of Two Classical Overtone Cepheids in a 413 Day Orbit
W. Gieren, B. Pilecki, G. Pietrzyński, D. Graczyk, I. Thompson, I. Soszyński, P. Konorski, R. Smolec, A. Udalski, N. Nardetto, G. Bono, P. Prada Moroni, J. Storm, A. Gallenne
2014, ApJ, 786, 80 — more information
Quantitative Spectroscopy of Blue Supergiants in Metal-poor Dwarf Galaxy NGC 3109
M. Hosek, R.-P. Kudritzki, F. Bresolin, M. Urbaneja, C. Evans, G. Pietrzyński, W. Gieren, N. Przybilla, G. Carraro
2014, ApJ, 785, 151
VISTA Variables in the Vía Láctea (VVV): Halfway Status and Results
M. Hempel, D. Minniti, I. Dékány, R. Saito, P. Lucas, J. Emerson, A. Ahumada, S. Aigrain, M. Alonso, J. Alonso-Garc’ıa, E. Amôres, R. Angeloni, J. Arias, R. Bandyopadhyay, R. Barbá, B. Barbuy, G. Baume, J. Beamin, L. Bedin, E. Bica, J. Borissova, …
2014, Msngr, 155, 29
The Araucaria Project. The Distance to the Small Magellanic Cloud from Late-type Eclipsing Binaries
D. Graczyk, G. Pietrzyński, I. Thompson, W. Gieren, B. Pilecki, P. Konorski, A. Udalski, I. Soszyński, S. Villanova, M. Górski, K. Suchomska, P. Karczmarek, R.-P. Kudritzki, F. Bresolin, A. Gallenne
2014, ApJ, 780, 59 — more information
Multiplicity of Galactic Cepheids from long-baseline interferometry. II. The Companion of AX Circini revealed with VLTI/PIONIER
A. Gallenne, A. Mérand, P. Kervella, J. Breitfelder, J.-B. Le Bouquin, J. Monnier, W. Gieren, B. Pilecki, G. Pietrzyński
2014, A&A, 561, L3
An interferometric view on binarity and circumstellar envelopes of Cepheids
A. Gallenne, P. Kervella, A. Mérand, J.-D. Monnier, J. Breitfleder, G. Pietrzyński, W. Gieren
2014, IAUS, 301, 411
The Araucaria Project: the Baade-Wesselink projection factor of pulsating stars
N. Nardetto, J. Storm, W. Gieren, G. Pietrzyński, E. Poretti
2014, IAUS, 301, 145
2013
Physical parameters and the projection factor of the classical Cepheid in the binary system OGLE-LMC-CEP-0227
B. Pilecki, D. Graczyk, G. Pietrzyński, W. Gieren, I. Thompson, W. Freedman, V. Scowcroft, B. Madore, A. Udalski, I. Soszyński, P. Konorski, R. Smolec, N. Nardetto, G. Bono, P. Prada Moroni, J. Storm, A. Gallenne
2013, MNRAS, 436, 953 — more information — get data
The Araucaria Project. A Distance Determination to the Local Group Spiral M33 from Near-infrared Photometry of Cepheid Variables
W. Gieren, M. Górski, G. Pietrzyński, P. Konorski, K. Suchomska, D. Graczyk, B. Pilecki, F. Bresolin, R.-P. Kudritzki, J. Storm, P. Karczmarek, A. Gallenne, P. Calderón, D. Geisler
2013, ApJ, 773, 69
Variable Stars from the OGLE-III Shallow Survey in the Large Magellanic Cloud
K. Ulaczyk, M. Szymański, A. Udalski, M. Kubiak, G. Pietrzyński, I. Soszyński, Ł. Wyrzykowski, R. Poleski, W. Gieren, A. Walker, A. García-Varela
2013, AcA, 63, 159-179
The Eclipsing Binary Cepheid OGLE-LMC-CEP-0227 in the Large Magellanic Cloud: Pulsation Modeling of Light and Radial Velocity Curves
M. Marconi, R. Molinaro, G. Bono, G. Pietrzyński, W. Gieren, B. Pilecki, R. Stellingwerf, D. Graczyk, R. Smolec, P. Konorski, K. Suchomska, M. Górski, P. Karczmarek
2013, ApJ, 768, L6
Understanding the dynamical structure of pulsating stars: The center-of-mass velocity and the Baade-Wesselink projection factor of the β Cephei star α Lupi
N. Nardetto, P. Mathias, A. Fokin, E. Chapellier, G. Pietrzyński, W. Gieren, D. Graczyk, D. Mourard
2013, A&A, 553, A112
Multiplicity of Galactic Cepheids from long-baseline interferometry. I. CHARA/MIRC detection of the companion of V1334 Cygni
A. Gallenne, J. Monnier, A. Mérand, P. Kervella, S. Kraus, G. Schaefer, W. Gieren, G. Pietrzyński, L. Szabados, X. Che, F. Baron, E. Pedretti, H. McAlister, T. ten Brummelaar, J. Sturmann, L. Sturmann, N. Turner, C. Farrington, N. Vargas
2013, A&A, 552, A21
An eclipsing-binary distance to the Large Magellanic Cloud accurate to two per cent
G. Pietrzyński, D. Graczyk, W. Gieren, I. Thompson, B. Pilecki, A. Udalski, I. Soszyński, S. Kozłowski, 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, …
2013, Nature, 495, 76 — more information
Pulsation models for the 0.26 M☉ star mimicking RR Lyrae pulsator. Model survey for the new class of variable stars
R. Smolec, G. Pietrzyński, D. Graczyk, B. Pilecki, W. Gieren, I. Thompson, K. Stępień, P. Karczmarek, P. Konorski, M. Górski, K. Suchomska, G. Bono, P. Prada, N. Nardetto
2013, MNRAS, 428, 3034
The distance to the Small Magellanic Cloud from eclipsing binaries
D. Graczyk, G. Pietrzyński, B. Pilecki, I.-B. Thompson. W. Gieren, P. Konorski, A. Udalski, I. Soszyński
2013, IAUS, 289, 222
The Araucaria Project: the Baade-Wesselink projection factor of pulsating stars and interferometric contribution to the eclipsing binaries technique of distance determination
N. Nardetto. M. Challouf, G. Guiglion, D. Mourard, W. Gieren, G. Pietrzyński. D. Graczyk
2013, IAUS, 289, 179
A precise and accurate distance to the Large Magellanic Cloud from late-type eclipsing-binary systems
G. Pietrzyński, W. Gieren, D. Graczyk, I.-B. Thompson, B. Pilecki, N. Nardetto, R.-P. Kudritzki, F. Bresolin, G. Bono, P.P. Moroni, P. Konorski, M. Górski, J. Storm, R. Smolec, P. Karczmarek
2013, IAUS, 289, 169
Cepheid distances from the Baade-Wesselink method
W. Gieren, J. Storm, N. Nardetto, A. Gallenne, G. Pietrzyński, P. Fouqué, T.G. Barnes, D. Majaess
2013, IAUS, 289, 138
The Araucaria Project. Binary Classical Cepheids in the LMC
D. Graczyk, B. Pilecki, G. Pietrzyński, W. Gieren, P. Konorski, I. Soszyński, A. Udalski, A. Gallenne
2013, EAS, 64, 309
The Araucaria Project: Precise and accurate distance determination to the LMC and SMC
G. Pietrzyński, D. Graczyk, W. Gieren, I.-B. Thompson, I. Soszyński, B. Pilecki, J. Storm, P. Konorski, K. Suchomska, A. Gallenne, N. Nardetto, P. Karczmarek, M. Górski
2013, EAS, 64, 305
Binary Cepheids from optical interferometry
A. Gallenne, P. Kervella, A. Mérand, J.D. Monnier, J. Breitfelder, G. Pietrzyński, W. Gieren
2013, EAS, 64, 197
2012
Photometric Maps Based on the OGLE-III Shallow Survey in the Large Magellanic Cloud
K. Ulaczyk, M. Szymański, A. Udalski, M. Kubiak, G. Pietrzyński, I. Soszyński, Ł. Wyrzykowski, R. Poleski, W. Gieren, A. Walker, A. García-Varela
2012, AcA, 62, 247
The ARAUCARIA project: Grid-based quantitative spectroscopic study of massive blue stars in NGC 55
N. Castro, M. Urbaneja, A. Herrero, M. Garcia, S. Simón-D’ıaz, F. Bresolin, G. Pietrzyński, R.-P. Kudritzki, W. Gieren
2012, A&A, 542, A79
The Araucaria Project: An Accurate Distance to the Late-type Double-lined Eclipsing Binary OGLE SMC113.3 4007 in the Small Magellanic Cloud
D. Graczyk, G. Pietrzyński, I. Thompson, W. Gieren, B. Pilecki, A. Udalski, I. Soszyński, Z. Kołaczkowski, R.-P. Kudritzki, F. Bresolin, P. Konorski, R. Mennickent, D. Minniti, J. Storm, N. Nardetto, P. Karczmarek
2012, ApJ, 750, 144
RR-Lyrae-type pulsations from a 0.26-solar-mass star in a binary system
G. Pietrzyński, I. Thompson, W. Gieren, D. Graczyk, K. Stępień, G. Bono, P. Moroni, B. Pilecki, A. Udalski, I. Soszyński, G. Preston, N. Nardetto, A. McWilliam, I. Roederer, M. Górski, P. Konorski, J. Storm
2012, Nature, 484, 75 — more information
On the Evolutionary and Pulsation Mass of Classical Cepheids. III. The Case of the Eclipsing Binary Cepheid CEP0227 in the Large Magellanic Cloud
P. Prada Moroni, M. Gennaro, G. Bono, G. Pietrzyński, W. Gieren, B. Pilecki, D. Graczyk, I. Thompson
2012, ApJ, 749, 108
Determining the Cepheid Period-Luminosity Relation Using Distances to Individual Cepheids from the Near-infrared Surface Brightness Method
J. Storm, W. Gieren, P. Fouqué, T. Barnes, T. Granzer, N. Nardetto, G. Pietrzyński, D. Queloz, I. Soszyński, K. Strassmeier, M. Weber
2012, Msngr, 147, 14
Quantitative Spectroscopy of Blue Supergiant Stars in the Disk of M81: Metallicity, Metallicity Gradient, and Distance
R.-P. Kudritzki, M. Urbaneja, Z. Gazak, F. Bresolin, N. Przybilla, W. Gieren, G. Pietrzyński
2012, ApJ, 747, 15
A new Large Magellanic Cloud K-band distance from precision measurements of nearby red clump stars
C. Laney, M. Joner, G. Pietrzyński
2012, MNRAS, 419, 1637
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’ıa Láctea
R. Saito, M. Hempel, D. Minniti, P. Lucas, M. Rejkuba, I. Toledo, O. Gonzalez, J. Alonso-Garc’ıa, M. Irwin, E. Gonzalez-Solares, S. Hodgkin, J. Lewis, N. Cross, V. Ivanov, E. Kerins, J. Emerson, M. Soto, E. Amôres, S. Gurovich, I. Dékány, R. Angeloni, …
2012, A&A, 537, A107
Quantitative Study of Blue Stars in NGC 55
N. Castro, A. Herrero, M.A. Urbaneja, M. García, S. Simón-Díaz, F. Bresolin, G. Pietrzyński, R.-P. Kudritzki, W. Gieren
2012, ASPC, 465, 267
2011
The VVV Survey of the Milky Way: first year results
D. Minniti, J. Clariá, R. Saito, M. Hempel, P. Lucas, M. Rejkuba, I. Toledo, O. Gonzalez, J. Alonso-Garc’ıa, M. Irwin, E. Gonzalez-Solares, N. Cross, V. Ivanov, M. Soto, I. Dékány, R. Angeloni, M. Catelan, E. Amôres, S. Gurovich, J. Emerson, J. Lewis, …
2011, BAAA, 54, 265
The Araucaria Project: Accurate Determination of the Dynamical Mass of the Classical Cepheid in the Eclipsing System OGLE-LMC-CEP-1812
G. Pietrzyński, I. Thompson, D. Graczyk, W. Gieren, B. Pilecki, A. Udalski, I. Soszynski, G. Bono, P. Konorski, N. Nardetto, J. Storm
2011, ApJ, 742, L20 — more information
Erratum: “The Araucaria Project: First Cepheid Distance to the Sculptor Group Galaxy NGC 7793 from Variables Discovered in a Wide-field Imaging Survey”
G. Pietrzyński, W. Gieren, M. Hamuy, G. Pignata, I. Soszyński, A. Udalski, A. Walker, P. Fouqué, F. Bresolin, R.-P. Kudritzki, A. García-Varela, O. Szewczyk, M. Szymański, M. Kubiak, Ł. Wyrzykowski
2011, AJ, 142, 178
Calibrating the Cepheid period-luminosity relation from the infrared surface brightness technique. II. The effect of metallicity and the distance to the LMC
J. Storm, W. Gieren, P. Fouqué, T. Barnes, I. Soszyński, G. Pietrzyński, N. Nardetto, D. Queloz
2011, A&A, 534, A95
The Baade-Wesselink p-factor applicable to LMC Cepheids
N. Nardetto, A. Fokin, P. Fouqué, J. Storm, W. Gieren, G. Pietrzyński, D. Mourard, P. Kervella
2011, A&A, 534, L16
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
J. Storm, W. Gieren, P. Fouqué, T. Barnes, G. Pietrzyński, N. Nardetto, M. Weber, T. Granzer, K. Strassmeier
2011, A&A, 534, A94
The Araucaria Project. Infrared Tip of the Red Giant Branch Distances to Five Dwarf Galaxies in the Local Group
M. Górski, G. Pietrzyński, W. Gieren
2011, AJ, 141, 194
2010
The dynamical mass of a classical Cepheid variable star in an eclipsing binary system
G. Pietrzyński, I. Thompson, W. Gieren, D. Graczyk, G. Bono, A. Udalski, I. Soszyński, D. Minniti, B. Pilecki
2010, Nature, 468, 542 — more information
The Araucaria Project: First Cepheid Distance to the Sculptor Group Galaxy NGC 7793 from Variables Discovered in a Wide-field Imaging Survey
G. Pietrzyński, W. Gieren, M. Hamuy, G. Pignata, I. Soszyński, A. Udalski, A. Walker, P. Fouqué, F. Bresolin, R.-P. Kudritzki, A. García-Varela, O. Szewczyk, M. Szymański, M. Kubiak, Ł. Wyrzykowski
2010, AJ, 140, 1475
The Araucaria Project. Population Effects on the V- and I-band Magnitudes of Red Clump Stars
G. Pietrzyński, M. Górski, W. Gieren, D. Laney, A. Udalski, A. Ciechanowska
2010, AJ, 140, 1038
VISTA Variables in the Vía Láctea (VVV): Current Status and First Results
R. Saito, M. Hempel, J. Alonso-García, I. Toledo, J. Borissova, O. González, J. Beamin, D. Minniti, P. Lucas, J. Emerson, A. Ahumada, S. Aigrain, M. Alonso, E. Amôres, R. Angeloni, J. Arias, R. Bandyopadhyay, R. Barbá, B. Barbuy, G. Baume, L. Bedin, …
2010, Msngr, 141, 24
The Araucaria Project: The Distance to the Small Magellanic Cloud from Near Infrared Photometry of Type II Cepheids
A. Ciechanowska, G. Pietrzyński, O. Szewczyk, W. Gieren, I. Soszyński
2010, AcA, 60, 233
VISTA Variables in the Via Lactea (VVV): The public ESO near-IR variability survey of the Milky Way
D. Minniti, P. Lucas, J. Emerson, R. Saito, M. Hempel, P. Pietrukowicz, A. Ahumada, M. Alonso, J. Alonso-Garcia, J. Arias, R. Bandyopadhyay, R. Barbá, B. Barbuy, L. Bedin, E. Bica, J. Borissova, L. Bronfman, G. Carraro, M. Catelan, J. Clariá, N. Cross, …
2010, NewA, 15, 433
Precise Distances to the Magellanic Clouds From Unique Late-Type Long-Period Eclipsing Binaries
G. Pietrzyński, I.B. Thompson, D. Graczyk, W. Gieren, D. Minniti
2010, ASPC, 435, 13
Blue Massive Stars in NGC 55: A First Quantitative Study
N. Castro, A. Herrero, M. Garcia, C. Trundle, F. Bresolin, W. Gieren, G. Pietrzyński, R.-P. Kudritzki, R. Demarco
2010, Highlights of Spanish Astrophysics, 269
2009
The Araucaria Project: The Distance to the Small Magellanic Cloud from Near-Infrared Photometry of RR Lyrae Variables
O. Szewczyk, G. Pietrzyński, W. Gieren, A. Ciechanowska, F. Bresolin, R.-P. Kudritzki
2009, AJ, 138, 1661
A New Distance to M33 Using Blue Supergiants and the FGLR Method
U, Vivian, M. Urbaneja, R.-P. Kudritzki, B. Jacobs, F. Bresolin, N. Przybilla
2009, ApJ, 704, 1120
The Araucaria Project: The Distance to the Sculptor Galaxy NGC 247 from Near-Infrared Photometry of Cepheid Variables
W. Gieren, G. Pietrzyński, I. Soszyński, O. Szewczyk, F. Bresolin, R.-P. Kudritzki, M. Urbaneja, J. Storm, D. Minniti, A. García-Varela
2009, ApJ, 700, 1141
The Araucaria Project. Infrared Tip of the Red Giant Branch Distances to the Carina and Fornax Dwarf Spheroidal Galaxies
G. Pietrzyński, M. Górski, W. Gieren, V. Ivanov, F. Bresolin, R.-P. Kudritzki
2009, AJ, 138, 459
Deep census of variable stars in a VLT/VIMOS field in Carina
P. Pietrukowicz, D. Minniti, J. Fernández, G. Pietrzyński, M. Ru’ız, W. Gieren, R. D’ıaz, M. Zoccali, M. Hempel
2009, A&A, 503, 651
High-resolution spectroscopy for Cepheids distance determination. V. Impact of the cross-correlation method on the p-factor and the γ-velocities
N. Nardetto, W. Gieren, P. Kervella, P. Fouqué, J. Storm, G. Pietrzyński, D. Mourard, D. Queloz
2009, A&A, 502, 951
Extragalactic Chemical Abundances: Do H II Regions and Young Stars Tell the Same Story? The Case of the Spiral Galaxy NGC 300
F. Bresolin, W. Gieren, R.-P. Kudritzki, G. Pietrzyński, M. Urbaneja, G. Carraro
2009, ApJ, 700, 309
The Araucaria Project. Determination of the Large Magellanic Cloud Distance from Late-Type Eclipsing Binary Systems. I. OGLE-051019.64-685812.3
G. Pietrzyński, I. Thompson, D. Graczyk, W. Gieren, A. Udalski, O. Szewczyk, D. Minniti, Z. Kołaczkowski, F. Bresolin, R.-P. Kudritzki
2009, ApJ, 697, 862
From the Dynamics of Cepheids to the Milky Way Rotation, and the Distance Scale Calibration
N. Nardetto, P. Kervella, T. Barnes, D. Bersier, A. Fokin, P. Foqué, W. Gieren, D. Gillet, J.H. Groh, S. Kraus, P. Mathias, A. Mérand, F. Millour, D. Mourard, G. Pietrzyński, D. Queloz, A. Stoekl, J. Storm
2009, AIPC, 1170, 13
The Araucaria Project: The Distances to the NGC 247 and WLM Galaxies From Cepheid Variables Discovered in a Wide-Field Imaging Survey
A. García, W. Gieren, G. Pietrzyński
2009, Revista Mexicana de Astronomia y Astrofisica Conference Series, 35, 309
The Araucaria Project. Improving the Cosmic Distance Scale
G. Pietrzyński, W. Gieren
2009, Revista Mexicana de Astronomia y Astrofisica Conference Series, 35, 233
2008
The Araucaria Project: the Distance to the Sculptor Group Galaxy NGC 247 from Cepheid Variables Discovered in a Wide-Field Imaging Survey
A. García-Varela, G. Pietrzyński, W. Gieren, A. Udalski, I. Soszyński, A. Walker, F. Bresolin, R.-P. Kudritzki, O. Szewczyk, M. Szymański, M. Kubiak, Ł. Wyrzykowski
2008, AJ, 136, 1770
The eclipsing LMC star OGLE05155332-6925581: a clue for double periodic variables
R. Mennickent, Z. Kołaczkowski, G. Michalska, G. Pietrzyński, R. Gallardo, L. Cidale, A. Granada, W. Gieren
2008, MNRAS, 389, 1605
The Araucaria Project: The Local Group Galaxy WLM-Distance and Metallicity from Quantitative Spectroscopy of Blue Supergiants
M. Urbaneja, R.-P. Kudritzki, F. Bresolin, N. Przybilla, W. Gieren, G. Pietrzyński
2008, ApJ, 684, 118
The Araucaria Project: The Distance to the Local Group Galaxy WLM from Near-Infrared Photometry of Cepheid Variables
W. Gieren, G. Pietrzyński, O. Szewczyk, I. Soszyński, F. Bresolin, R.-P. Kudritzki, M. Urbaneja, J. Storm, D. Minniti
2008, ApJ, 683, 611
Quantitative Spectroscopy of 24 A Supergiants in the Sculptor Galaxy NGC 300: Flux-weighted Gravity-Luminosity Relationship, Metallicity, and Metallicity Gradient
R.-P. Kudritzki, M. Urbaneja, F. Bresolin, N. Przybilla, W. Gieren, G. Pietrzyński
2008, ApJ, 681, 269
The Araucaria Project. The Distance of the Large Magellanic Cloud from Near-Infrared Photometry of RR Lyrae Variables
O. Szewczyk, G. Pietrzyński, W. Gieren, J. Storm, A. Walker, L. Rizzi, K. Kinemuchi, F. Bresolin, R.-P. Kudritzki, M. Dall’Ora
2008, AJ, 136, 272
The Araucaria Project: VLT-spectroscopy of blue massive stars in NGC 55
N. Castro, A. Herrero, M. Garcia, C. Trundle, F. Bresolin, W. Gieren, G. Pietrzyński, R.-P. Kudritzki, R. Demarco
2008, A&A, 485, 41
The Araucaria Project: the Distance to the Sculptor Dwarf Spheroidal Galaxy from Infrared Photometry of RR Lyrae Stars
G. Pietrzyński, W. Gieren, O. Szewczyk, A. Walker, L. Rizzi, F. Bresolin, R.-P. Kudritzki, K. Nalewajko, J. Storm, M. Dall’Ora, V. Ivanov
2008, AJ, 135, 1993
A catalogue of Be stars in the direction of the Galactic Bulge
B. Sabogal, R. Mennickent, G. Pietrzyński, J. Garc’ıa, W. Gieren, Z. Kołaczkowski
2008, A&A, 478, 659
The Araucaria Project: Near-Infrared Photometry of Cepheid Variables in the Sculptor Galaxy NGC 55
W. Gieren, G. Pietrzyński, I. Soszyński, F. Bresolin, R.-P. Kudritzki, J. Storm, D. Minniti
2008, ApJ, 672, 266
2007
The abundances of nearby red clump giants
Y. Liu, G. Zhao, J. Shi, G. Pietrzyński, W. Gieren
2007, MNRAS, 382, 553
VLT Spectroscopy of Blue Supergiants in IC 1613
F. Bresolin, M. Urbaneja, W. Gieren, G. Pietrzyński, R.-P. Kudritzki
2007, ApJ, 671, 2028
The Araucaria Project: The Distance to the Local Group Galaxy WLM from Cepheid Variables Discovered in a Wide-Field Imaging Survey
G. Pietrzyński, W. Gieren, A. Udalski, I. Soszyński, F. Bresolin, R.-P. Kudritzki, A. Garcia, D. Minniti, R. Mennickent, O. Szewczyk, M. Szymański, M. Kubiak, Ł. Wyrzykowski
2007, AJ, 134, 594
The ARAUCARIA Project: VLT-FORS Spectroscopy of Blue Supergiants in NGC 3109-Classifications, First Abundances, and Kinematics
C. Evans, F. Bresolin, M. Urbaneja, G. Pietrzyński, W. Gieren, R.-P. Kudritzki
2007, ApJ, 659, 1198
Report on the Third Advanced Chilean School of Astrophysics
W. Gieren, M. Zoccali, I. Saviane, R. Méndez, G. Pietrzyński
2007, Msngr, 127, 68
2006
The Araucaria Project
G. Pietrzyński, W. Gieren
2006, MmSAI, 77, 239
Classical Cepheids as age indicators
M. Marconi, G. Bono, F. Caputo, S. Cassisi, P. Pietrukowicz, G. Pietrzyński, W. Gieren
2006, MmSAI, 77, 67
Evidence for a universal slope of the period-luminosity relation from direct distances to Cepheids in the LMC
W. Gieren, J. Storm, T. Barnes, P. Fouqué, G. Pietrzyński, F. Kienzle
2006, MmSAI, 77, 198
The Araucaria Project: The Distance to the Sculptor Group Galaxy NGC 55 from a Newly Discovered Abundant Cepheid Population
G. Pietrzyński, W. Gieren, I. Soszyński, A. Udalski, F. Bresolin, R.-P. Kudritzki, R. Mennickent, A. Walker, A. Garcia, O. Szewczyk, M. Szymański, M. Kubiak, Ł. Wyrzykowski
2006, AJ, 132, 2556
Blue and yellow long-period variables in the direction of the Small Magellanic Cloud
R. Mennickent, L. Cidale, G. Pietrzyński, W. Gieren, B. Sabogal
2006, A&A, 457, 949
The Araucaria Project: Distance to the Local Group Galaxy NGC 3109 from Near-Infrared Photometry of Cepheids
I. Soszyński, W. Gieren, G. Pietrzyński, F. Bresolin, R.-P. Kudritzki, J. Storm
2006, ApJ, 648, 375
The Araucaria Project: A Wide-Field Photometric Survey for Cepheid Variables in NGC 3109
G. Pietrzyński, W. Gieren, A. Udalski, I. Soszyński, F. Bresolin, R.-P. Kudritzki, R. Mennickent, M. Kubiak, M. Szymański, S. Hidalgo
2006, ApJ, 648, 366
The Araucaria Project: VLT Spectra of Blue Supergiants in WLM- Classification and First Abundances
F. Bresolin, G. Pietrzyński, M. Urbaneja, W. Gieren, R.-P. Kudritzki, K. Venn
2006, ApJ, 648, 1007
The Araucaria Project: An Accurate Distance to the Local Group Galaxy NGC 6822 from Near-Infrared Photometry of Cepheid Variables
W. Gieren, G. Pietrzyński, K. Nalewajko, I. Soszyński, F. Bresolin, R.-P. Kudritzki, D. Minniti, A. Romanowsky
2006, ApJ, 647, 1056
The Araucaria Project: The Distance to the Local Group Galaxy IC 1613 from Near-Infrared Photometry of Cepheid Variables
G. Pietrzyński, W. Gieren, I. Soszyński, F. Bresolin, R.-P. Kudritzki, M. Dall’Ora, J. Storm, G. Bono
2006, ApJ, 642, 216
The Araucaria project. Bright variable stars in NGC 6822 from a wide-field imaging survey
R. Mennickent, W. Gieren, I. Soszyński, G. Pietrzyński
2006, A&A, 450, 873
The Araucaria Project: The Distance to NGC 300 from the Red Giant Branch Tip Using HST ACS Imaging
L. Rizzi, F. Bresolin, R.-P. Kudritzki, W. Gieren, G. Pietrzyński
2006, ApJ, 638, 766
Spectroscopy of blue and yellow long-period variables in the Small Magellanic Cloud
R.E. Mennickent. L.S. Cidale, G. Pietrzyński, W. Gieren, B. Sabogal
2006, Revista Mexicana de Astronomia y Astrofisica Conference Series, 26, 74
2005
The Araucaria Project: The Effect of Blending on the Cepheid Distance to NGC 300 from Advanced Camera for Surveys Images
F. Bresolin, G. Pietrzyński, W. Gieren, R.-P. Kudritzki
2005, ApJ, 634, 1020
Measuring Improved Distances to Nearby Galaxies: The Araucaria Project
W. Gieren, G. Pietrzyński, F. Bresolin, R.-P. Kudritzki, D. Minniti, M. Urbaneja, I. Soszynski, J. Storm, P. Fouque, G. Bono, A. Walker, J. Garcia
2005, Msngr, 121, 23
A survey for OB associations in the Sculptor Group spiral galaxy NGC 7793
G. Pietrzyński, K. Ulaczyk, W. Gieren, F. Bresolin, R. Kudritzki
2005, A&A, 440, 783
Mean JHK Magnitudes of Fundamental-Mode Cepheids from Single-Epoch Observations
I. Soszyński, W. Gieren, G. Pietrzyński
2005, PASP, 117, 823
Be star candidates in the Large Magellanic Cloud: the catalogue and comparison with the Small Magellanic Cloud sample
B. Sabogal, R. Mennickent, G. Pietrzyński, W. Gieren
2005, MNRAS, 361, 1055
The Araucaria Project: Near-Infrared Photometry of Cepheid Variables in the Sculptor Galaxy NGC 300
W. Gieren, G. Pietrzyński, I. Soszyński, F. Bresolin, R.-P. Kudritzki, D. Minniti, J. Storm
2005, ApJ, 628, 695
Direct Distances to Cepheids in the Large Magellanic Cloud: Evidence for a Universal Slope of the Period-Luminosity Relation up to Solar Abundance
W. Gieren, J. Storm, T. Barnes, P. Fouqué, G. Pietrzyński, F. Kienzle
2005, ApJ, 627, 224
On the α-Element Abundance Gradients in the Disk of the Sculptor Spiral Galaxy NGC 300
M. Urbaneja, A. Herrero, F. Bresolin, R.-P. Kudritzki, W. Gieren, J. Puls, N. Przybilla, F. Najarro, G. Pietrzyński
2005, ApJ, 622, 862
Revealing the nature of double-periodic blue variables in the Magellanic Clouds
R. Mennickent, L. Cidale, M. D’ıaz, G. Pietrzyński, W. Gieren, B. Sabogal
2005, MNRAS, 357, 1219
Classical Cepheid Pulsation Models. X. The Period-Age Relation
G. Bono, M. Marconi, S. Cassisi, F. Caputo, W. Gieren, G. Pietrzyński
2005, ApJ, 621, 966
2004
The Araucaria Project: The Distance to the Local Group Galaxy NGC 6822 from Cepheid Variables Discovered in a Wide-Field Imaging Survey
G. Pietrzyński, W. Gieren, A. Udalski, F. Bresolin, R.-P. Kudritzki, I. Soszyński, M. Szymański, M. Kubiak
2004, AJ, 128, 2815
The Araucaria Project: An Improved Distance to the Sculptor Spiral Galaxy NGC 300 from Its Cepheid Variables
W. Gieren, G. Pietrzyński, A. Walker, F. Bresolin, D. Minniti, R.-P. Kudritzki, A. Udalski, I. Soszyński, P. Fouqué, J. Storm, G. Bono
2004, AJ, 128, 1167
The Araucaria Project. Variable stars outside the Local Group: NGC 300
R. Mennickent, G. Pietrzyński, W. Gieren
2004, MNRAS, 350, 679
On the Photometric Variability of Blue Supergiants in NGC 300 and Its Impact on the Flux-weighted Gravity-Luminosity Relationship
F. Bresolin, G. Pietrzyński, W. Gieren, R.-P. Kudritzki, N. Przybilla, P. Fouqué
2004, ApJ, 600, 182
The Araucaria project – improving stellar distance indicators
G. Pietrzyński, W. Gieren
2004, ASPC, 310, 87
2003
GaBoDS: The Garching-Bonn Deep Survey. I. Anatomy of galaxy clusters in the background of NGC 300
M. Schirmer, T. Erben, P. Schneider, G. Pietrzyński, W. Gieren, S. Carpano, A. Micol, F. Pierfederici
2003, A&A, 407, 869
The Araucaria Project: Dependence of Mean K, J, and I Absolute Magnitudes of Red Clump Stars on Metallicity and Age
G. Pietrzyński, W. Gieren, A. Udalski
2003, AJ, 125, 2494
Double-periodic blue variables in the Magellanic Clouds
R. Mennickent, G. Pietrzyński, M. Diaz, W. Gieren
2003, A&A, 399, L47
Light curve analysis of Be star candidates in the Small Magellanic Cloud
R.E. Mennickent, G. Pietrzyński, W. Gieren
2003, ASPC, 292, 89
2002
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
G. Pietrzyński, W. Gieren
2002, AJ, 124, 2633
Discovery and Quantitative Spectral Analysis of an Ofpe/WN9 (WN11) Star in the Sculptor Spiral Galaxy NGC 300
F. Bresolin, R.-P. Kudritzki, F. Najarro, W. Gieren, G. Pietrzyński
2002, ApJ, 577, L107
On Be star candidates and possible blue pre-main sequence objects in the Small Magellanic Cloud
R. Mennickent, G. Pietrzyński, W. Gieren, O. Szewczyk
2002, A&A, 393, 887
Photometric Standard Stars in the BVI System in a Wide Field Centered on the Spiral Galaxy NGC 300
G. Pietrzyński, W. Gieren, A. Udalski
2002, PAxSP, 114, 298
Spectroscopy of Blue Supergiants in the Spiral Galaxy NGC 300
F. Bresolin, W. Gieren, R.-P. Kudritzki, G. Pietrzyński, N. Przybilla
2002, ApJ, 567, 277
The ARAUCARIA Project: Discovery of Cepheid Variables in NGC 300 from a Wide-Field Imaging Survey
G. Pietrzyński, W. Gieren, P. Fouqué, F. Pont
2002, AJ, 123, 789
Identification and Study of Blue Supergiants in Nearby Galaxies
F. Bresolin, W. Gieren, G. Pietrzyński, R.-P. Kudritzki, N. Przybilla, R.H. Méndez
2002, Proceedings of the ESO Workshop, 184
2001
Research in Concepción on globular cluster systems and galaxy formation, and the extragalactic distance scale
W. Gieren, D. Geisler, T. Richtler, G. Pietrzyński, B. Dirsch
2001, Msngr, 106, 15
A Catalog of OB Associations in the spiral galaxy NGC 300
G. Pietrzyński, W. Gieren, P. Fouqué, F. Pont
2001, A&A, 371, 497
Quantitative Spectroscopy of Blue Supergiants beyond the Local Group: NGC 3621 and NGC 300
N. Przybilla, F. Bresolin, R.-P. Kudritzki, W. Gieren, G. Pietrzyński, R.H. Méndez
2001, Astronomische Gesellschaft Meeting Abstracts, 18, 219