J. \u0160ubjak vedl studii, kter\u00e1 p\u0159edev\u0161\u00edm ozn\u00e1mila objev planety TOI-2458 b. Planeta je typu mini-neptun a ob\u00edh\u00e1 kolem hv\u011bzdy typu F. Tento objev byl umo\u017en\u011bn kombinac\u00ed fotometrick\u00fdch dat z dru\u017eice TESS a spektroskopick\u00fdch pozorov\u00e1n\u00ed z p\u0159\u00edstroje HARPS na observato\u0159i La Silla v \u010cile. Planeta byla poprv\u00e9 detekov\u00e1na jako tranzituj\u00edc\u00ed objekt, co\u017e znamen\u00e1, \u017ee p\u0159i sv\u00e9m ob\u011bhu p\u0159ech\u00e1z\u00ed p\u0159ed mate\u0159skou hv\u011bzdou a zp\u016fsobuje pravideln\u00e9 poklesy jej\u00ed jasnosti. Dodate\u010dn\u00e1 pozorov\u00e1n\u00ed z r\u016fzn\u00fdch pozemsk\u00fdch p\u0159\u00edstroj\u016f prok\u00e1zala, \u017ee tyto poklesy nejsou zp\u016fsobeny kontaminac\u00ed sign\u00e1lu okoln\u00edmi hv\u011bzdami. Ze sv\u011bteln\u00e9 k\u0159ivky tak bylo mo\u017en\u00e9 ur\u010dit z\u00e1kladn\u00ed vlastnosti planety, jako je velikost a ob\u011b\u017en\u00e1 doba. Pomoc\u00ed spektroskopick\u00fdch m\u011b\u0159en\u00ed byly pak potvrzeny jej\u00ed hmotnost a dal\u0161\u00ed parametry. TOI-2458 b m\u00e1 hmotnost zhruba 13,3n\u00e1sobek hmotnosti Zem\u011b a jej\u00ed polom\u011br \u010din\u00ed asi 2,8n\u00e1sobek Zem\u011b. Jej\u00ed ob\u011b\u017en\u00e1 dr\u00e1ha je velmi bl\u00edzk\u00e1 mate\u0159sk\u00e9 hv\u011bzd\u011b, p\u0159i\u010dem\u017e jeden ob\u011bh dokon\u010d\u00ed za pouh\u00e9 3,74 dne. To znamen\u00e1, \u017ee se nach\u00e1z\u00ed ve velmi hork\u00e9m prost\u0159ed\u00ed, kter\u00e9 by nebylo vhodn\u00e9 pro \u017eivot, jak ho zn\u00e1me. Auto\u0159i vyvinuli snahu z dostupn\u00fdch pozorov\u00e1n\u00ed v\u00edce odvodit o mo\u017en\u00e9m charakteru planety jako takov\u00e9, objekt se v\u0161ak nach\u00e1z\u00ed v oblasti rozhran\u00ed typ\u016f. M\u016f\u017ee tedy j\u00edt o vodn\u00ed sv\u011bt stejn\u011b dob\u0159e jako o kamennou planetu s tenkou vod\u00edkovou atmosf\u00e9rou.<\/p>\n\n\n\n
V\u00edce na webov\u00fdch str\u00e1nk\u00e1ch ASU<\/a><\/p>\n\n\n\n Mini-neptun ob\u00edhaj\u00edc\u00ed aktivn\u00ed hv\u011bzdu na konci sv\u00e9ho \u017eivota v p\u0159edstav\u011b um\u011bl\u00e9 inteligence. (Obr\u00e1zek vytvo\u0159en pomoc\u00ed Microsoft Copilot.)<\/p>\n\n\n\n <\/p>\n","protected":false},"excerpt":{"rendered":" J. \u0160ubjak vedl studii, kter\u00e1 p\u0159edev\u0161\u00edm ozn\u00e1mila objev planety TOI-2458 b. Planeta je typu mini-neptun a ob\u00edh\u00e1 kolem hv\u011bzdy typu F. Tento objev byl umo\u017en\u011bn<\/p>\n","protected":false},"author":1,"featured_media":3234,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38,32],"tags":[],"class_list":["post-3231","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-exoplanety","category-novinky"],"_links":{"self":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/3231","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=3231"}],"version-history":[{"count":2,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/3231\/revisions"}],"predecessor-version":[{"id":3233,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/3231\/revisions\/3233"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media\/3234"}],"wp:attachment":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media?parent=3231"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/categories?post=3231"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/tags?post=3231"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Popis obr\u00e1zku<\/h4>\n\n\n\n
Dal\u0161\u00ed informace<\/h4>\n\n\n\n
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