{"id":959,"date":"2022-12-07T16:29:42","date_gmt":"2022-12-07T15:29:42","guid":{"rendered":"http:\/\/utf.mff.cuni.cz\/~pejcha\/?p=959"},"modified":"2022-12-07T16:35:29","modified_gmt":"2022-12-07T15:35:29","slug":"mass-ratio-distribution-of-contact-binary-stars","status":"publish","type":"post","link":"https:\/\/utf.mff.cuni.cz\/~pejcha\/index.php\/2022\/12\/07\/mass-ratio-distribution-of-contact-binary-stars\/","title":{"rendered":"Mass-ratio distribution of contact binary stars"},"content":{"rendered":"\n<p>First paper by PhD student Milan Pe\u0161ta developing a method to estimate mass-ratio distribution of contact binaries simply from the distribution of their light curve amplitudes. This was originally proposed by <a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2001AJ....122.1007R\/abstract\">Rucinski (2001)<\/a>, but in this paper we reach sufficient sensitivity to determine the minimum mass ratio, when contact binaries merge due to the Darwin instability. This is possible thanks to a new Bayesian method to filter contaminants and Kepler data.  The method can be easily extended to much bigger samples from TESS or Gaia. The paper is submitted to A&amp;A and the preprint can be accessed at <a href=\"https:\/\/arxiv.org\/abs\/2212.02553\">https:\/\/arxiv.org\/abs\/2212.02553<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"644\" height=\"1024\" src=\"http:\/\/utf.mff.cuni.cz\/~pejcha\/wp-content\/uploads\/2022\/12\/pesta-644x1024.png\" alt=\"\" class=\"wp-image-960\" srcset=\"https:\/\/utf.mff.cuni.cz\/~pejcha\/wp-content\/uploads\/2022\/12\/pesta-644x1024.png 644w, https:\/\/utf.mff.cuni.cz\/~pejcha\/wp-content\/uploads\/2022\/12\/pesta-189x300.png 189w, https:\/\/utf.mff.cuni.cz\/~pejcha\/wp-content\/uploads\/2022\/12\/pesta-768x1221.png 768w, https:\/\/utf.mff.cuni.cz\/~pejcha\/wp-content\/uploads\/2022\/12\/pesta-966x1536.png 966w, https:\/\/utf.mff.cuni.cz\/~pejcha\/wp-content\/uploads\/2022\/12\/pesta.png 980w\" sizes=\"(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>First paper by PhD student Milan Pe\u0161ta developing a method to estimate mass-ratio distribution of contact binaries simply from the distribution of their light curve amplitudes. This was originally proposed by Rucinski (2001), but in this paper we reach sufficient sensitivity to determine the minimum mass ratio, when contact binaries merge due to the Darwin &hellip; <a href=\"https:\/\/utf.mff.cuni.cz\/~pejcha\/index.php\/2022\/12\/07\/mass-ratio-distribution-of-contact-binary-stars\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Mass-ratio distribution of contact binary stars&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/utf.mff.cuni.cz\/~pejcha\/index.php\/wp-json\/wp\/v2\/posts\/959"}],"collection":[{"href":"https:\/\/utf.mff.cuni.cz\/~pejcha\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/utf.mff.cuni.cz\/~pejcha\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/utf.mff.cuni.cz\/~pejcha\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/utf.mff.cuni.cz\/~pejcha\/index.php\/wp-json\/wp\/v2\/comments?post=959"}],"version-history":[{"count":3,"href":"https:\/\/utf.mff.cuni.cz\/~pejcha\/index.php\/wp-json\/wp\/v2\/posts\/959\/revisions"}],"predecessor-version":[{"id":963,"href":"https:\/\/utf.mff.cuni.cz\/~pejcha\/index.php\/wp-json\/wp\/v2\/posts\/959\/revisions\/963"}],"wp:attachment":[{"href":"https:\/\/utf.mff.cuni.cz\/~pejcha\/index.php\/wp-json\/wp\/v2\/media?parent=959"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/utf.mff.cuni.cz\/~pejcha\/index.php\/wp-json\/wp\/v2\/categories?post=959"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/utf.mff.cuni.cz\/~pejcha\/index.php\/wp-json\/wp\/v2\/tags?post=959"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}