{"id":726,"date":"2019-03-15T19:28:22","date_gmt":"2019-03-15T19:28:22","guid":{"rendered":"https:\/\/araucaria.camk.edu.pl\/?p=726"},"modified":"2021-10-04T15:51:57","modified_gmt":"2021-10-04T15:51:57","slug":"even-more-accurate-benchmark-for-cosmic-distances","status":"publish","type":"post","link":"https:\/\/araucaria.camk.edu.pl\/index.php\/2019\/03\/15\/even-more-accurate-benchmark-for-cosmic-distances\/","title":{"rendered":"Even more accurate benchmark for cosmic distances"},"content":{"rendered":"\n

An international team of astronomers within the Araucaria Project measured the distance to the Large Magellanic Cloud (LMC) with an exceptional accuracy of 1%.<\/span><\/p>\n\n\n\n

\n\n\n\n

A distance to the Large Magellanic Cloud that is precise to one per cent<\/h3>\n\n\n\n

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, R. Smolec, W. Narloch<\/em><\/p>\n\n\n\n

2019, Nature, 567, 200<\/a><\/p>\n\n\n\n

The LMC was named after the famous traveler Ferdynand Magellan who observed it during his journey around the world. Just like our Galaxy, the LMC hosts billions of stars. Because of its proximity, it is a perfect laboratory for studies of various objects and astrophysical processes. These studies require the knowledge of the distance. The distance to the LMC is also a benchmark for cosmic distances in the same way as the standard meter bar defines distances measured on Earth. Therefore, the distance to the LMC is so important for many fields in modern astrophysics, in particular cosmology.<\/span><\/p>\n\n\n\n

After the discovery of accelerating expansion of the Universe (Nobel Prize in 2011), the explanation of the nature of mysterious dark energy is one of the greatest challenges in modern science. The nature of dark energy can be explored thanks to the measurements of the famous Hubble constant, which describes the expansion rate of the Universe. The remarkably accurate measurement to the LMC distance gives a unique opportunity to significantly improve the measurement of the Hubble constant and hence to solve one of the biggest puzzles of the Universe.<\/span><\/p>\n\n\n\n

In order to measure the distance to the LMC, a Polish team together with colleagues from Chile, France, Germany and the USA developed a new method commonly known as the Polish cosmic ruler. This method allows to measure extremely accurate distances to nearby galaxies. <\/span><\/p>\n\n\n\n

The work was published in a prestigious journal <\/span>Nature<\/span><\/a>.<\/span><\/p>\n\n\n\n

The team was lead by prof. Grzegorz Pietrzy\u0144ski from Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences. Polish part of the team participating in the study:
<\/span>prof. dr hab. Grzegorz Pietrzy\u0144ski
<\/span>dr Dariusz Graczyk
<\/span>dr Bogumi\u0142 Pilecki
<\/span>mgr Paulina Karczmarek
<\/span>dr Marek G\u00f3rski
<\/span>dr Ksenia Suchomska
<\/span>mgr M\u00f3nica Taormina
<\/span>mgr Bart\u0142omiej Zgirski
<\/span>mgr Piotr Wielg\u00f3rski
<\/span>dr Zbigniew Ko\u0142aczkowski
<\/span>mgr Piotr Konorski
<\/span>dr hab. Rados\u0142aw Smolec
<\/span>dr in\u017c. Weronika Narloch<\/span><\/p>\n\n\n\n

\"\"
An artistic\u2019s view of the LMC distances determination, developed by the team of prof. Grzegorz Pietrzy\u0144ski. The method is often called as Polish cosmic ruler.<\/figcaption><\/figure><\/div>\n","protected":false},"excerpt":{"rendered":"

An international team of astronomers within the Araucaria Project measured the distance to the Large Magellanic Cloud (LMC) with an exceptional accuracy of 1%.<\/p>\n","protected":false},"author":1,"featured_media":727,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[13,16,12,18,19],"class_list":["post-726","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science-highlights","tag-binary","tag-distance","tag-eclipsing","tag-late-type","tag-lmc"],"_links":{"self":[{"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/posts\/726","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/types\/post"}],"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=726"}],"version-history":[{"count":8,"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/posts\/726\/revisions"}],"predecessor-version":[{"id":1950,"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/posts\/726\/revisions\/1950"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/media\/727"}],"wp:attachment":[{"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/media?parent=726"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/categories?post=726"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/tags?post=726"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}