{"id":202894,"date":"2025-01-01T02:02:48","date_gmt":"2025-01-01T08:02:48","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2025\/01\/german-astronomers-discover-three-new-hydrogen-deficient-pre-white-dwarfs"},"modified":"2025-01-01T02:02:48","modified_gmt":"2025-01-01T08:02:48","slug":"german-astronomers-discover-three-new-hydrogen-deficient-pre-white-dwarfs","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2025\/01\/german-astronomers-discover-three-new-hydrogen-deficient-pre-white-dwarfs","title":{"rendered":"German astronomers discover three new hydrogen-deficient pre-white dwarfs"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/german-astronomers-discover-three-new-hydrogen-deficient-pre-white-dwarfs3.jpg\"><\/a><\/p>\n<p>Using the X-shooter instrument at ESO\u2019s Very Large Telescope (VLT), German astronomers have detected three new pre-white dwarfs, which turned out to be strongly hydrogen-deficient. The finding was reported in a research paper <a href=\"https:\/\/arxiv.org\/abs\/2412.15984\" target=\"_blank\">published<\/a> December 20 on the pre-print server <i>arXiv<\/i>.<\/p>\n<p>White dwarfs (WDs) are stellar cores left behind after a star has exhausted its nuclear fuel. Due to their high gravity, they are known to have atmospheres of either pure hydrogen or pure helium. However, a small fraction of WDs shows traces of heavier elements.<\/p>\n<p>Although WDs have a relatively small size, comparable to that of the Earth, they are a few million times more massive than our planet. Pre-white dwarfs (PWDs) are a few times larger and slated to shrink in size, eventually becoming WDs within about a few thousand years.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Using the X-shooter instrument at ESO\u2019s Very Large Telescope (VLT), German astronomers have detected three new pre-white dwarfs, which turned out to be strongly hydrogen-deficient. The finding was reported in a research paper published December 20 on the pre-print server arXiv. White dwarfs (WDs) are stellar cores left behind after a star has exhausted its [\u2026]<\/p>\n","protected":false},"author":662,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1497,8],"tags":[],"class_list":["post-202894","post","type-post","status-publish","format-standard","hentry","category-energy","category-space"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/202894","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=202894"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/202894\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=202894"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=202894"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=202894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}