{"id":178204,"date":"2021-05-11T15:32:11","date_gmt":"2021-05-11T13:32:11","guid":{"rendered":"https:\/\/polishscience.pl\/?p=178204"},"modified":"2021-05-11T15:32:11","modified_gmt":"2021-05-11T13:32:11","slug":"astronomers-from-the-university-of-warsaw-solved-the-mystery-of-the-red-giants","status":"publish","type":"post","link":"https:\/\/www.polishscience.pl\/en\/astronomers-from-the-university-of-warsaw-solved-the-mystery-of-the-red-giants\/","title":{"rendered":"Astronomers from the University of Warsaw solved the mystery of the red giants"},"content":{"rendered":"<p><strong>Astronomers from the Astronomical Observatory of the University of Warsaw (UW) have explained almost a century-old mystery of the origin of the so-called\u00a0long secondary period in stellar red giants. They published an article on this topic in The Astrophysical Journal Letters.<\/strong><\/p>\n<p>Scientists from the Astronomical Observatory of the University of Warsaw under the supervision of Prof.\u00a0Igor Soszy\u0144ski have been studying the phenomenon of the so-called\u00a0Long Secondary Period (LSP), using the world&#8217;s largest photometric database created for almost 30 years by the Sky Survey Optical Gravitational Lensing Experiment (OGLE).\u00a0 The OGLE project conducts regular observations of about 2 billion stars belonging to our Galaxy and the nearby\u00a0Magellanic Clouds.\u00a0It is chaired by Prof. Andrzej Udalski. The huge OGLE database was used to select an unprecedentedly large sample of around 16,000 LSP stars and study their properties.<\/p>\n<p>Measurements of changes in the radial velocity of LSP stars indicate that the companions of red giants, immersed in a dust cloud are most often bodies with substellar masses, the so-called\u00a0brown dwarfs.\u00a0Objects of this type probably arose as a result of the pulling of matter by planets orbiting initially in distant orbits around their stars.\u00a0This explanation opens up new perspectives for studying the spatial distributions of planetary systems in our galaxies and other galaxies.<\/p>\n<p>More:<br \/>\n<a href=\"https:\/\/translate.google.com\/translate?hl=ru&amp;prev=_t&amp;sl=pl&amp;tl=en&amp;u=https:\/\/iopscience.iop.org\/article\/10.3847\/2041-8213\/abf3c9\">https:\/\/iopscience.iop.org\/article\/10.3847\/2041-8213\/abf3c9<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Astronomers from the Astronomical Observatory of the University of Warsaw (UW) have explained almost a century-old mystery of the origin of the so-called\u00a0long secondary period in stellar red giants. They published an article on this topic in The Astrophysical Journal Letters. Scientists from the Astronomical Observatory of the University of Warsaw under the supervision of [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[23],"tags":[],"_links":{"self":[{"href":"https:\/\/www.polishscience.pl\/en\/wp-json\/wp\/v2\/posts\/178204"}],"collection":[{"href":"https:\/\/www.polishscience.pl\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.polishscience.pl\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.polishscience.pl\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.polishscience.pl\/en\/wp-json\/wp\/v2\/comments?post=178204"}],"version-history":[{"count":0,"href":"https:\/\/www.polishscience.pl\/en\/wp-json\/wp\/v2\/posts\/178204\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.polishscience.pl\/en\/wp-json\/wp\/v2\/media?parent=178204"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.polishscience.pl\/en\/wp-json\/wp\/v2\/categories?post=178204"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.polishscience.pl\/en\/wp-json\/wp\/v2\/tags?post=178204"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}