{"id":2903,"date":"2024-01-12T14:02:05","date_gmt":"2024-01-12T13:02:05","guid":{"rendered":"https:\/\/stel.asu.cas.cz\/cs\/?p=2903"},"modified":"2024-01-12T14:02:05","modified_gmt":"2024-01-12T13:02:05","slug":"pulsace-pekuliarniho-obra-mwc-137","status":"publish","type":"post","link":"https:\/\/stel.asu.cas.cz\/cs\/2024\/01\/12\/pulsace-pekuliarniho-obra-mwc-137\/","title":{"rendered":"Pulsace pekuli\u00e1rn\u00edho obra MWC 137"},"content":{"rendered":"\n<p>Ob\u0159\u00ed hv\u011bzdy spektr\u00e1ln\u00edho typu B, v&nbsp;jejich\u017e spektru se objevuj\u00ed emisn\u00ed \u010d\u00e1ry, jsou v&nbsp;dlouhodob\u00e9m v\u00fdzkumn\u00e9m hled\u00e1\u010dku Michaely Kraus ze Stel\u00e1rn\u00edho odd\u011blen\u00ed ASU. Tentokr\u00e1t byla sou\u010d\u00e1st\u00ed t\u00fdmu, jeho\u017e c\u00edlem bylo vysv\u011btlit v\u00fdzna\u010dnou fotometrickou periodu s&nbsp;d\u00e9lkou 1,9 dne ned\u00e1vno objevenou u&nbsp;hv\u011bzdy MWC 137.&nbsp;<\/p>\n\n\n\n<p>Velmi hmotn\u00e9 hv\u011bzdy jsou velmi d\u016fle\u017eit\u00e9, proto\u017ee se v\u00fdznamn\u011b pod\u00edlej\u00ed na obohacov\u00e1n\u00ed mezihv\u011bzdn\u00e9ho plynu t\u011b\u017e\u0161\u00edmi chemick\u00fdmi prvky. Vnit\u0159n\u00ed struktura, v\u00fdvojov\u00fd stav a\u00a0koneckonc\u016f i\u00a0n\u011bkter\u00e9 z\u00e1kladn\u00ed parametry ob\u0159\u00edch hv\u011bzd jsou \u010dasto ur\u010deny s\u00a0velk\u00fdmi nejistotami, i\u00a0kdy\u017e je k\u00a0dan\u00fdm hv\u011bzd\u00e1m k\u00a0dispozici velk\u00e9 mno\u017estv\u00ed nejr\u016fzn\u011bj\u0161\u00edho pozorovac\u00edho materi\u00e1lu. To je i\u00a0p\u0159\u00edpad hv\u011bzdy MWC 137. Tato hork\u00e1 ob\u0159\u00ed hv\u011bzda nach\u00e1zej\u00edc\u00ed se v\u00a0souhv\u011bzd\u00ed Orionu byla c\u00edlem cel\u00e9 \u0159ady pozorovac\u00edch kampan\u00ed. \u017de jde o\u00a0hv\u011bzdu velmi zaj\u00edmavou se uk\u00e1zalo ji\u017e v\u00a0polovin\u011b minul\u00e9ho stolet\u00ed, kdy se nap\u0159\u00edklad prok\u00e1zalo, \u017ee v\u00a0jej\u00edm t\u011bsn\u00e9m okol\u00ed se nach\u00e1z\u00ed mlhovina, kter\u00e1 je s\u00a0hv\u011bzdou geneticky spojena. Ve spektru byly objeveny \u010detn\u00e9 emisn\u00ed \u010d\u00e1ry, z\u00a0nich\u017e n\u011bkter\u00e9 pat\u0159\u00ed mezi tzv. zak\u00e1zan\u00e9, kter\u00e9 maj\u00ed sv\u016fj p\u016fvod ve specifick\u00fdch podm\u00ednk\u00e1ch v\u00a0plynu v\u00a0okol\u00ed hv\u011bzdy. Pro v\u00fdskyt zak\u00e1zan\u00fdch emisn\u00edch \u010dar \u0159ad\u00ed astronomov\u00e9 MWC 137 mezi tzv. B[e] hv\u011bzdy, jejich\u017e v\u00fdvojov\u00fd stav je obecn\u011b zahrnut mnoh\u00fdmi z\u00e1hadami.<\/p>\n\n\n\n<p>Pokra\u010dov\u00e1n\u00ed: <a href=\"https:\/\/www.asu.cas.cz\/articles\/2218\/19\/na-cem-pracujeme-pulsace-pekuliarniho-obra-mwc-137\" data-type=\"link\" data-id=\"https:\/\/www.asu.cas.cz\/articles\/2218\/19\/na-cem-pracujeme-pulsace-pekuliarniho-obra-mwc-137\" target=\"_blank\" rel=\"noreferrer noopener\">web ASU<\/a><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Dal\u0161\u00ed informace<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>zdroj: <a rel=\"noreferrer noopener\" href=\"https:\/\/www.asu.cas.cz\/articles\/2218\/19\/na-cem-pracujeme-pulsace-pekuliarniho-obra-mwc-137\" data-type=\"link\" data-id=\"https:\/\/www.asu.cas.cz\/articles\/2218\/19\/na-cem-pracujeme-pulsace-pekuliarniho-obra-mwc-137\" target=\"_blank\">Na \u010dem pracujeme: Pulsace pekuli\u00e1rn\u00edho obra MWC 137<\/a>; M. \u0160vanda, webov\u00e9 str\u00e1nky ASU<\/li>\n\n\n\n<li>pr\u00e1ce: S. Parida, A. P. Yadav, M. Kraus a\u00a0kol., <em>On the stability and pulsation in models of B[e] star MWC 137<\/em>, Monthly Notices of the Royal Astronomical Society <a rel=\"noreferrer noopener\" href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2024MNRAS.527.7414P\/abstract\" target=\"_blank\">527 (2023) 7414-7423, preprint arXiv:2311.12549<\/a><\/li>\n\n\n\n<li>kontakt:\u00a0Dr. Michaela Kraus, michaela.kraus@asu.cas.cz<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Ob\u0159\u00ed hv\u011bzdy spektr\u00e1ln\u00edho typu B, v&nbsp;jejich\u017e spektru se objevuj\u00ed emisn\u00ed \u010d\u00e1ry, jsou v&nbsp;dlouhodob\u00e9m v\u00fdzkumn\u00e9m hled\u00e1\u010dku Michaely Kraus ze Stel\u00e1rn\u00edho odd\u011blen\u00ed ASU. Tentokr\u00e1t byla sou\u010d\u00e1st\u00ed t\u00fdmu,<\/p>\n","protected":false},"author":1,"featured_media":2905,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37,32],"tags":[],"class_list":["post-2903","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\/2903","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=2903"}],"version-history":[{"count":2,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/2903\/revisions"}],"predecessor-version":[{"id":2906,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/2903\/revisions\/2906"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media\/2905"}],"wp:attachment":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media?parent=2903"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/categories?post=2903"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/tags?post=2903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}