{"id":141,"date":"2012-04-01T15:35:15","date_gmt":"2012-04-01T15:35:15","guid":{"rendered":"https:\/\/araucaria.camk.edu.pl\/?p=141"},"modified":"2021-10-04T16:00:29","modified_gmt":"2021-10-04T16:00:29","slug":"binary-evolution-pulsator-bep","status":"publish","type":"post","link":"https:\/\/araucaria.camk.edu.pl\/index.php\/2012\/04\/01\/binary-evolution-pulsator-bep\/","title":{"rendered":"Binary Evolution Pulsator (BEP)"},"content":{"rendered":"\n

New type of RR Lyrae-like variable identified in a binary system.<\/p>\n\n\n\n

\n\n\n\n

RR-Lyrae-type pulsations from a 0.26-solar-mass star in a binary system<\/h3>\n\n\n\n

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><\/p>\n\n\n\n

2012, Nature, 484, 75<\/a><\/p>\n\n\n\n

\"\"
Artist version of the mass transfer in a binary system<\/figcaption><\/figure><\/div>\n\n\n\n

Binary Evolution Pulsators (BEPs) refer to the systems which, after the episode of mass transfer, consist of a low-mass pulsating component and its companion. The first of its kind, OGLE-BLG-RRLYR-02792, is a binary with RR Lyrae-like pulsator of mass of 0.26 M\u2609<\/sub>, and evolved from close binary system with an initial orbital period of 2.9 days. BEP is a very short-lived phase where the physical properties of the pulsator happen to place it in the same instability strip of the Hertzsprung-Russell diagram as that occupied by classical pulsators. Estimations show that 0.2% of RR Lyrae stars may be contaminated by BEPs, which implies that distances measured with RR Lyrae stars should not be significantly affected by these binary interlopers.<\/p>\n","protected":false},"excerpt":{"rendered":"

New type of RR Lyrae-like variable identified in a binary system.<\/p>\n","protected":false},"author":1,"featured_media":142,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[20,13,12,21],"class_list":["post-141","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science-highlights","tag-bep","tag-binary","tag-eclipsing","tag-rr-lyrae"],"_links":{"self":[{"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/posts\/141","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=141"}],"version-history":[{"count":3,"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/posts\/141\/revisions"}],"predecessor-version":[{"id":1961,"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/posts\/141\/revisions\/1961"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/media\/142"}],"wp:attachment":[{"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/media?parent=141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/categories?post=141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/araucaria.camk.edu.pl\/index.php\/wp-json\/wp\/v2\/tags?post=141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}