{"id":2819,"date":"2023-10-30T09:34:36","date_gmt":"2023-10-30T08:34:36","guid":{"rendered":"https:\/\/stel.asu.cas.cz\/cs\/?p=2819"},"modified":"2023-10-30T09:34:36","modified_gmt":"2023-10-30T08:34:36","slug":"aktivita-ct-serpentis-a-v446-herculis-pred-a-po-vybuchu-novy","status":"publish","type":"post","link":"https:\/\/stel.asu.cas.cz\/cs\/2023\/10\/30\/aktivita-ct-serpentis-a-v446-herculis-pred-a-po-vybuchu-novy\/","title":{"rendered":"Aktivita CT Serpentis a\u00a0V446 Herculis p\u0159ed a\u00a0po v\u00fdbuchu novy"},"content":{"rendered":"\n<p>V\u00fdbuch novy pat\u0159\u00ed mezi jeden z\u00a0jev\u016f na obloze, kter\u00fd dok\u00e1\u017ee p\u0159ekvapit nejednoho astronoma. Nejcenn\u011bj\u0161\u00ed exempl\u00e1\u0159e jsou takov\u00e9, pro n\u011b\u017e existuj\u00ed del\u0161\u00ed dobu trvaj\u00edc\u00ed pozorov\u00e1n\u00ed p\u0159ed v\u00fdbuchem i\u00a0po v\u00fdbuchu. Takov\u00e9 dva syst\u00e9my studoval v\u00a0\u010dl\u00e1nku publikovan\u00e9m v\u00a0Astronomical Journal Vojt\u011bch \u0160imon ze Stel\u00e1rn\u00edho odd\u011blen\u00ed ASU.<\/p>\n\n\n\n<p class=\"p {text-align: justify}\">Novy tvo\u0159\u00ed jednu z&nbsp;v\u00fdznamn\u00fdch skupin v&nbsp;t\u0159\u00edd\u011b kataklyzmick\u00fdch prom\u011bnn\u00fdch. Kataklyzmick\u00e9 prom\u011bnn\u00e9 jsou syst\u00e9my tvo\u0159en\u00e9 dv\u011bma hv\u011bzdami, kde jedna si ji\u017e pro\u0161la zna\u010dnou \u010d\u00e1st\u00ed sv\u00e9ho \u017eivota a&nbsp;dostala se do degenerovan\u00e9ho stavu, v&nbsp;na\u0161em p\u0159\u00edpad\u011b jde o&nbsp;b\u00edl\u00e9ho trpasl\u00edka. Druhou slo\u017ekou je pak hv\u011bzda v&nbsp;pokro\u010dil\u00e9m st\u00e1diu v\u00fdvoje, kter\u00e1 zcela vyplnila prostor, kter\u00fd j\u00ed p\u0159id\u011blily gravita\u010dn\u00ed z\u00e1kony v&nbsp;tomto t\u011bsn\u00e9m dvojhv\u011bzdn\u00e9m syst\u00e9mu. L\u00e1tka z&nbsp;t\u00e9to hv\u011bzdy, tzv. d\u00e1rce (donora), tedy p\u0159et\u00e9k\u00e1 sm\u011brem ke kompaktn\u00ed slo\u017ece. Kolem b\u00edl\u00e9ho trpasl\u00edka se vytv\u00e1\u0159\u00ed akre\u010dn\u00ed disk, p\u0159\u00edpadn\u011b, m\u00e1-li b\u00edl\u00fd trpasl\u00edk siln\u00e9 magnetick\u00e9 pole, p\u0159et\u00e9k\u00e1 l\u00e1tka pod\u00e9l induk\u010dn\u00edch \u010dar tohoto pole na povrch objektu.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.asu.cas.cz\/articles\/2157\/19\/na-cem-pracujeme-aktivita-ct-serpentis-a-v446-herculis-pred-a-po-vybuchu-novy\" data-type=\"link\" data-id=\"https:\/\/www.asu.cas.cz\/articles\/2157\/19\/na-cem-pracujeme-aktivita-ct-serpentis-a-v446-herculis-pred-a-po-vybuchu-novy\" target=\"_blank\" rel=\"noreferrer noopener\">Pokra\u010dov\u00e1n\u00ed na webu ASU<\/a><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"has-small-font-size\">Obr\u00e1zek v z\u00e1hlav\u00ed: Dlouhodob\u00e1 sv\u011bteln\u00e1 k\u0159ivka CT Ser (naho\u0159e) a V446 Her (dole), do n\u00ed\u017e byla spojena data z r\u016fzn\u00fdch datab\u00e1z\u00ed. Krou\u017eky ukazuj\u00ed detekci objektu v arch\u00edvu fotografick\u00fdch desek DASCH, zat\u00edmco horn\u00ed limit jasnosti hv\u011bzdy je vyzna\u010den \u017elut\u00fdmi vodorovn\u00fdmi \u010d\u00e1rkami. Zobrazena jsou i pozorov\u00e1n\u00ed z jin\u00fdch projekt\u016f.<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>p\u0159evzato: Na \u010dem pracujeme: Aktivita CT Serpentis a&nbsp;V446 Herculis p\u0159ed a&nbsp;po v\u00fdbuchu novy (M. \u0160vanda, <a href=\"https:\/\/www.asu.cas.cz\/articles\/2157\/19\/na-cem-pracujeme-aktivita-ct-serpentis-a-v446-herculis-pred-a-po-vybuchu-novy\" target=\"_blank\" rel=\"noreferrer noopener\">web ASU<\/a>)<\/li>\n\n\n\n<li>V. \u0160imon, <em>Relation between Long-term Activity and Luminosity of the Pre- and Post-novae CT Ser and V446 Her<\/em>, Astrophysical Journal <a rel=\"noreferrer noopener\" href=\"https:\/\/iopscience.iop.org\/article\/10.3847\/1538-3881\/acac87\" target=\"_blank\">165 (2023) id. 102<\/a><\/li>\n\n\n\n<li>Kontakt:&nbsp;RNDr. Vojt\u011bch \u0160imon, Ph.D., simon@asu.cas.cz<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>V\u00fdbuch novy pat\u0159\u00ed mezi jeden z\u00a0jev\u016f na obloze, kter\u00fd dok\u00e1\u017ee p\u0159ekvapit nejednoho astronoma. Nejcenn\u011bj\u0161\u00ed exempl\u00e1\u0159e jsou takov\u00e9, pro n\u011b\u017e existuj\u00ed del\u0161\u00ed dobu trvaj\u00edc\u00ed pozorov\u00e1n\u00ed p\u0159ed<\/p>\n","protected":false},"author":1,"featured_media":2820,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37,32],"tags":[],"class_list":["post-2819","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\/2819","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=2819"}],"version-history":[{"count":1,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/2819\/revisions"}],"predecessor-version":[{"id":2821,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/2819\/revisions\/2821"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media\/2820"}],"wp:attachment":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media?parent=2819"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/categories?post=2819"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/tags?post=2819"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}