{"id":2350,"date":"2022-08-08T15:13:37","date_gmt":"2022-08-08T13:13:37","guid":{"rendered":"https:\/\/stel.asu.cas.cz\/cs\/?p=2350"},"modified":"2022-08-08T15:16:19","modified_gmt":"2022-08-08T13:16:19","slug":"jak-dlouho-spi-modre-svitive-promenne-hvezdy","status":"publish","type":"post","link":"https:\/\/stel.asu.cas.cz\/cs\/2022\/08\/08\/jak-dlouho-spi-modre-svitive-promenne-hvezdy\/","title":{"rendered":"Jak dlouho &#8218;sp\u00ed&#8216; modr\u00e9 sv\u00edtiv\u00e9 prom\u011bnn\u00e9 hv\u011bzdy"},"content":{"rendered":"\n<p>&#8218;Modr\u00e9 sv\u00edtiv\u00e9 prom\u011bnn\u00e9&#8216; (LBVs) jsou hmotn\u00e9 hv\u011bzdy zn\u00e1m\u00e9 silnou spektr\u00e1ln\u00ed a\u00a0fotometrickou prom\u011bnnost\u00ed. Nen\u00ed zcela uzav\u0159eno, v\u00a0jak\u00e9 v\u00fdvojov\u00e9 f\u00e1zi se tyto vz\u00e1cn\u00e9 hv\u011bzdy nach\u00e1zej\u00ed, ani jak\u00fdm sm\u011brem se bude d\u00e1le ub\u00edrat jejich v\u00fdvoj. Olga Maryeva ze Stel\u00e1rn\u00edho odd\u011blen\u00ed ASU vedla mezin\u00e1rodn\u00ed t\u00fdm studuj\u00edc\u00ed hv\u011bzdu MN 112. Jejich z\u00e1v\u011brem je, \u017ee jde o\u00a0velmi hmotnou sp\u00edc\u00ed modrou sv\u00edtivou prom\u011bnnou.\u00a0<\/p>\n\n\n\n<p>V\u011bdci jsou dnes p\u0159esv\u011bd\u010deni, \u017ee modr\u00e9 sv\u00edtiv\u00e9 prom\u011bnn\u00e9 jsou velmi hmotn\u00fdmi hv\u011bzdami v\u00a0d\u016fle\u017eit\u00e9 f\u00e1zi sv\u00e9ho v\u00fdvojov\u00e9ho cyklu. V\u00a0t\u00e9to f\u00e1zi hv\u011bzda ztr\u00e1c\u00ed velk\u00e9 mno\u017estv\u00ed hmotnosti prost\u0159ednictv\u00edm siln\u00e9ho hv\u011bzdn\u00e9ho v\u011btru, ale tak\u00e9 p\u0159i gigantick\u00fdch erupc\u00edch. Podle v\u00fdvojov\u00fdch model\u016f jsou modr\u00e9 sv\u00edtiv\u00e9 prom\u011bnn\u00e9 s\u00a0hmotnostmi vy\u0161\u0161\u00edmi ne\u017e 40 Slunc\u00ed p\u0159echodn\u00fdm obdob\u00edm p\u0159ed st\u00e1diem Wolfovy-Rayetovy hv\u011bzdy, zat\u00edmco modr\u00e9 sv\u00edtiv\u00e9 prom\u011bnn\u00e9 s\u00a0hmotnostmi men\u0161\u00edmi jsou jejich fin\u00e1ln\u00edm v\u00fdvojov\u00fdm st\u00e1diem, pravd\u011bpodobn\u011b n\u00e1sledovan\u00fdm v\u00fdbuchem supernovy s\u00a0kolabuj\u00edc\u00edm j\u00e1drem.<\/p>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/www.asu.cas.cz\/articles\/1978\/19\/na-cem-pracujeme-jak-dlouho-spi-hvezdna-modrenka\" target=\"_blank\">Pokra\u010dov\u00e1n\u00ed (str\u00e1nky ASU)<\/a><\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"odkazy\">Odkazy<\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li><a rel=\"noreferrer noopener\" href=\"https:\/\/www.asu.cas.cz\/articles\/1978\/19\/na-cem-pracujeme-jak-dlouho-spi-hvezdna-modrenka\" target=\"_blank\">Na \u010dem pracujeme: Jak dlouho sp\u00ed hv\u011bzdn\u00e1 mod\u0159enka?<\/a> Michal \u0160vanda<\/li><li>O.Maryeva a\u00a0kol., <em>How long can LBVs sleep? A\u00a0long-term photometric variability and spectral study of the Galactic candidate luminous blue variable MN 112<\/em>, Montly Notices of the Royal Astronomical Society 513 (2022) 5752-5765, preprint <a rel=\"noreferrer noopener\" href=\"https:\/\/arxiv.org\/abs\/2205.14542\" target=\"_blank\">arXiv:2205.14542<\/a><\/li><li>Kontakt:\u00a0<a href=\"https:\/\/stel.asu.cas.cz\/cs\/fyzika-horkych-hvezd\/lide\/#maryeva\">Dr. Olga V. Maryeva, CSc.<\/a>, olga.maryeva@asu.cas.cz<\/li><\/ul>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8218;Modr\u00e9 sv\u00edtiv\u00e9 prom\u011bnn\u00e9&#8216; (LBVs) jsou hmotn\u00e9 hv\u011bzdy zn\u00e1m\u00e9 silnou spektr\u00e1ln\u00ed a\u00a0fotometrickou prom\u011bnnost\u00ed. Nen\u00ed zcela uzav\u0159eno, v\u00a0jak\u00e9 v\u00fdvojov\u00e9 f\u00e1zi se tyto vz\u00e1cn\u00e9 hv\u011bzdy nach\u00e1zej\u00ed, ani jak\u00fdm<\/p>\n","protected":false},"author":1,"featured_media":2352,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37,32],"tags":[],"class_list":["post-2350","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-horke-hvezdy","category-novinky"],"_links":{"self":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/2350","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/comments?post=2350"}],"version-history":[{"count":5,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/2350\/revisions"}],"predecessor-version":[{"id":2356,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/2350\/revisions\/2356"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media\/2352"}],"wp:attachment":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media?parent=2350"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/categories?post=2350"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/tags?post=2350"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}