{"id":2296,"date":"2022-05-26T12:27:17","date_gmt":"2022-05-26T10:27:17","guid":{"rendered":"https:\/\/stel.asu.cas.cz\/cs\/?p=2296"},"modified":"2023-01-24T17:07:37","modified_gmt":"2023-01-24T16:07:37","slug":"zahalena-dvojhvezda-uu-cas","status":"publish","type":"post","link":"https:\/\/stel.asu.cas.cz\/cs\/2022\/05\/26\/zahalena-dvojhvezda-uu-cas\/","title":{"rendered":"Zahalen\u00e1 dvojhv\u011bzda UU Cas"},"content":{"rendered":"\n<p><p style=\"text-align: justify;\">Odhalit pravou podstaty v\u00edcen\u00e1sobn\u00fdch hv\u011bzdn\u00fdch syst\u00e9m\u016f m\u016f\u017ee b\u00fdt obt\u00ed\u017en\u00e9, a to zejm\u00e9na v p\u0159\u00edpad\u011b, kdy se p\u0159inejmen\u0161\u00edm jedna ze slo\u017eek schov\u00e1v\u00e1 v plynu, kter\u00fd je ned\u00edlnou sou\u010d\u00e1st\u00ed soustavy. Petr Hadrava z ASU vedl rozs\u00e1hl\u00fd mezin\u00e1rodn\u00ed t\u00fdm, kter\u00fd p\u0159isp\u011bl k de\u0161ifrov\u00e1n\u00ed konfigurace syst\u00e9mu UU Cas. V pr\u00e1ci byla mimo jin\u00e9 vyu\u017eita sada spekter po\u0159\u00edzen\u00fdch pomoc\u00ed Perkova 2-m dalekohledu.<\/p>\n\n\n\n<p><p style=\"text-align: justify;\">Objektem z\u00e1jmu byla opticky nerozli\u0161iteln\u00e1 dvojhv\u011bzda UU Cas v souhv\u011bzd\u00ed Kassiopeji. Hv\u011bzda je pom\u011brn\u011b jasn\u00e1 a poskytuje sign\u00e1l dosta\u010duj\u00edc\u00ed k zisku p\u0159esn\u00fdch fotometrick\u00fdch i spektroskopick\u00fdch dat nutn\u00fdch k vytvo\u0159en\u00ed spolehliv\u00e9ho modelu dvojhv\u011bzdy. Ve spektru t\u00e9to hv\u011bzdy jsou z\u0159eteln\u011b pozorovateln\u00e9 spektr\u00e1ln\u00ed \u010d\u00e1ry jen jedn\u00e9 slo\u017eky, ale jejich dopplerovsk\u00e9 posuny sv\u011bd\u010d\u00ed o ob\u011bhu kolem druh\u00e9ho t\u011blesa. Proto\u017ee ve spektru jsou pozorov\u00e1ny i emisn\u00ed \u010d\u00e1ry nap\u0159\u00edklad Balmerovy s\u00e9rie vod\u00edku, bylo z\u00e1hy jasn\u00e9, \u017ee v syst\u00e9mu se nach\u00e1z\u00ed velk\u00e9 mno\u017estv\u00ed plynu, pravd\u011bpodobn\u011b ve form\u011b akre\u010dn\u00edho disku, kter\u00fd p\u0159inejmen\u0161\u00edm \u010d\u00e1ste\u010dn\u011b zakr\u00fdv\u00e1 druhou slo\u017eku. &#8230;<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"podrobnosti-a-kontakty\">Podrobnosti a kontakty<\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>\u010dl\u00e1nek na webu ASU (M. \u0160vanda): <a rel=\"noreferrer noopener\" href=\"https:\/\/www.asu.cas.cz\/articles\/1951\/19\/na-cem-pracujeme-zahalena-dvojhvezda-uu-cas\" target=\"_blank\">Na \u010dem pracujeme: Zahalen\u00e1 dvojhv\u011bzda UU Cas<\/a><\/li><li>P. Hadrava a kol., <em>Spectroscopy of the massive interacting binary UU Cassiopeiae<\/em>, Astronomy &amp; Astrophysics, v tisku, preprint <a rel=\"noreferrer noopener\" href=\"https:\/\/arxiv.org\/abs\/2201.13275\" target=\"_blank\">arXiv:2201.13275<\/a><\/li><li><strong>Kontakt<\/strong>: doc. RNDr. Petr Hadrava, DrSc., petr.hadrava@asu.cas.cz<\/li><\/ul>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Odhalit pravou podstaty v\u00edcen\u00e1sobn\u00fdch hv\u011bzdn\u00fdch syst\u00e9m\u016f m\u016f\u017ee b\u00fdt obt\u00ed\u017en\u00e9, a to zejm\u00e9na v p\u0159\u00edpad\u011b, kdy se p\u0159inejmen\u0161\u00edm jedna ze slo\u017eek schov\u00e1v\u00e1 v plynu, kter\u00fd je<\/p>\n","protected":false},"author":1,"featured_media":2298,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37,32,36,43],"tags":[],"class_list":["post-2296","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-horke-hvezdy","category-novinky","category-oddeleni","category-perek-2m"],"_links":{"self":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/2296","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=2296"}],"version-history":[{"count":4,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/2296\/revisions"}],"predecessor-version":[{"id":2303,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/2296\/revisions\/2303"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media\/2298"}],"wp:attachment":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media?parent=2296"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/categories?post=2296"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/tags?post=2296"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}