Velmi hmotn\u00e9 hv\u011bzdy p\u0159edstavuj\u00ed kr\u00e1tk\u00e9, ale mimo\u0159\u00e1dn\u011b bou\u0159liv\u00e9 epizody ve v\u00fdvoji galaxi\u00ed. Pat\u0159\u00ed mezi nejintenzivn\u011bj\u0161\u00ed zdroje z\u00e1\u0159en\u00ed, hv\u011bzdn\u00e9ho v\u011btru i v\u00fdron\u016f hmoty, obohacuj\u00ed sv\u00e9 okol\u00ed o t\u011b\u017e\u0161\u00ed prvky. Ve sv\u00fdch pozdn\u00edch f\u00e1z\u00edch mohou nab\u00fdvat velmi r\u016fznorod\u00fdch typ\u016f a rozli\u0161it mezi nimi \u010dasto nen\u00ed snadn\u00e9 \u2013 zejm\u00e9na pokud se spol\u00e9h\u00e1me jen na viditeln\u00fd obor elektromagnetick\u00e9ho z\u00e1\u0159en\u00ed. Michaela Kraus z ASU vedla t\u00fdm, kter\u00fd si detailn\u011b prohl\u00e9dl \u0161est vybran\u00fdch hv\u011bzd v galaxi\u00edch M31 a M33 v bl\u00edzk\u00e9 infra\u010derven\u00e9 oblasti. Auto\u0159i ukazuj\u00ed, \u017ee tato \u010d\u00e1st spektra dok\u00e1\u017ee odhalit znaky, kter\u00e9 jsou v optick\u00e9m oboru skryt\u00e9, a umo\u017e\u0148uje doladit \u010di radik\u00e1ln\u011b zm\u011bnit dosavadn\u00ed klasifikaci zkouman\u00fdch objekt\u016f.<\/p>\n\n\n\n
…<\/p>\n\n\n\n
Studie Michaely Kraus z ASU a jej\u00edch koleg\u016f se zam\u011b\u0159uje na \u0161est objekt\u016f v galaxi\u00edch M31 (v souhv\u011bzd\u00ed Andromedy) a M33 (v souhv\u011bzd\u00ed Troj\u00faheln\u00edku), kter\u00e9 byly v minulosti klasifikov\u00e1ny nejednozna\u010dn\u011b. V literatu\u0159e se objevovaly jako kandid\u00e1ti na LBV, jako tzv. Fe II hv\u011bzdy \u010di dokonce jako B[e] superob\u0159i. Auto\u0159i se rozhodli tyto nejasnosti vy\u0159e\u0161it pomoc\u00ed detailn\u00ed infra\u010derven\u00e9 spektroskopie v p\u00e1smu K (vlnov\u00e1 d\u00e9lka 2,2\u20132,4 \u03bcm), kter\u00e1 umo\u017e\u0148uje detekci molekul\u00e1rn\u00edch p\u00e1s\u016f oxidu uhelnat\u00e9ho CO nebo Pfundovy spektr\u00e1ln\u00ed s\u00e9rie vod\u00edku, je\u017e pat\u0159\u00ed mezi kl\u00ed\u010dov\u00e9 znaky r\u016fzn\u00fdch f\u00e1z\u00ed v\u00fdvoje masivn\u00edch hv\u011bzd.<\/p>\n\n\n\n
pokra\u010dov\u00e1n\u00ed: web ASU<\/a><\/p>\n\n\n\n Sn\u00edmek galaxie M33 v Troj\u00faheln\u00edku z dalekohledu ESO. Galaxie je dostate\u010dn\u011b bl\u00edzko (ve vzd\u00e1lenosti asi 3 milion\u016f sv\u011bteln\u00fdch let), aby v n\u00ed bylo mo\u017en\u00e9 pozorovat nejen nejr\u016fzn\u011bj\u0161\u00ed mlhoviny, ale dokonce i jednotliv\u00e9 hv\u011bzdy, zejm\u00e9na ty jasn\u011bj\u0161\u00ed. Je tedy dobr\u00fdm c\u00edlem k systematick\u00e9mu studiu ob\u0159\u00edch hv\u011bzd. (kredit, ESO)<\/p>\n\n\n\n Velmi hmotn\u00e9 hv\u011bzdy p\u0159edstavuj\u00ed kr\u00e1tk\u00e9, ale mimo\u0159\u00e1dn\u011b bou\u0159liv\u00e9 epizody ve v\u00fdvoji galaxi\u00ed. Pat\u0159\u00ed mezi nejintenzivn\u011bj\u0161\u00ed zdroje z\u00e1\u0159en\u00ed, hv\u011bzdn\u00e9ho v\u011btru i v\u00fdron\u016f hmoty, obohacuj\u00ed sv\u00e9 okol\u00ed<\/p>\n","protected":false},"author":1,"featured_media":3562,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37,32],"tags":[],"class_list":["post-3560","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\/3560","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=3560"}],"version-history":[{"count":4,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/3560\/revisions"}],"predecessor-version":[{"id":3566,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/3560\/revisions\/3566"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media\/3562"}],"wp:attachment":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media?parent=3560"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/categories?post=3560"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/tags?post=3560"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Popis obr\u00e1zku<\/h4>\n\n\n\n
Odkazy a dal\u0161\u00ed informace<\/h4>\n\n\n\n
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<\/p>\n","protected":false},"excerpt":{"rendered":"