{"id":228944,"date":"2026-01-13T13:25:15","date_gmt":"2026-01-13T19:25:15","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/01\/new-massive-hot-subdwarf-binary-discovered"},"modified":"2026-01-13T13:25:15","modified_gmt":"2026-01-13T19:25:15","slug":"new-massive-hot-subdwarf-binary-discovered","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/01\/new-massive-hot-subdwarf-binary-discovered","title":{"rendered":"New massive hot subdwarf binary discovered"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/new-massive-hot-subdwarf-binary-discovered2.jpg\"><\/a><\/p>\n<p>Astronomers report the discovery of a new binary system, designated LAMOST J065816.72+094343.1. The newfound binary consists of a massive and hot subdwarf and an unseen companion. <a href=\"https:\/\/www.aanda.org\/10.1051\/0004-6361\/202557949\" target=\"_blank\">The finding<\/a> was detailed in the January issue of the <i>Astronomy &amp; Astrophysics<\/i> journal.<\/p>\n<p>LAMOST J065816.72+094343.1, or J0658 for short, was first identified in 2018 by the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) and classified as a hot subdwarf star of an sdOB type. Initial observations of J0658 have found that it is a helium-poor star with an effective temperature of about 35,800 K and a projected rotational velocity of 37 km\/s.<\/p>\n<p>Given that very little is known about J0658, a team of astronomers led by Fabian Mattig of the University of Potsdam in Germany decided to analyze the archival LAMOST data and to conduct follow-up observations of this star with the Southern Astrophysical Research (SOAR) telescope and the Very Large Telescope (VLT), hoping to unveil its true nature.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Astronomers report the discovery of a new binary system, designated LAMOST J065816.72+094343.1. The newfound binary consists of a massive and hot subdwarf and an unseen companion. The finding was detailed in the January issue of the Astronomy &amp; Astrophysics journal. LAMOST J065816.72+094343.1, or J0658 for short, was first identified in 2018 by the Large Sky [\u2026]<\/p>\n","protected":false},"author":662,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-228944","post","type-post","status-publish","format-standard","hentry","category-space"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/228944","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/662"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=228944"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/228944\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=228944"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=228944"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=228944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}