V prvn\u00edm \u010dtvrtlet\u00ed roku 2022 ond\u0159ejov\u0161t\u00ed astronomov\u00e9 potvrdili objev \u010dty\u0159 nov\u00fdch plynn\u00fdch exoplanet. Jedn\u00e1 se o ob\u0159\u00ed planety podobn\u00e9 na\u0161emu Jupiteru a Saturnu. T\u00edm ale ve\u0161ker\u00e1 podobnost kon\u010d\u00ed. V\u0161echny \u010dty\u0159i exoplanety ob\u00edhaj\u00ed sv\u00e9 hv\u011bzdy s periodou \u0159\u00e1dov\u011b n\u011bkolika dn\u00ed a jsou na povrchu velice hork\u00e9. Jedna z hv\u011bzd je ve st\u00e1diu \u010derven\u00e9ho obra, dv\u011b jsou naopak mlad\u00e9 hv\u011bzdy. Zb\u00fdvaj\u00edc\u00ed hv\u011bzda je podobn\u00e1 na\u0161emu Slunci.<\/p><\/p>\n\n\n\n
V roce 2020 – 2021 pozorovala vesm\u00edrn\u00e1 mise TESS \u010dty\u0159i hv\u011bzdy TOI-1181, TOI-1268, TOI-1516 a TOI-2046. Tyto hv\u011bzdy ve sv\u00fdch sv\u011bteln\u00fdch k\u0159ivk\u00e1ch vykazovaly z\u00e1kryty, tedy poklesy jasnosti d\u00edky p\u0159echod\u016fm pravd\u011bpodobn\u011b souputn\u00edka s planet\u00e1rn\u00ed hmotou. <\/p><\/p>\n\n\n\n
Zaznamenan\u00e9 poklesy jasnosti napov\u00eddaly, \u017ee by se m\u011blo jednat o planet\u00e1rn\u00ed souputn\u00edky s hmotnostmi od Saturnu po n\u011bkolik Jupiter\u016f. Ond\u0159ejovsk\u00fd Perk\u016fv dalekohled (nejv\u011bt\u0161\u00ed dalekohled u n\u00e1s) se spektrografem OES se s dal\u0161\u00edmi observato\u0159emi na severn\u00ed polokouli zam\u011b\u0159il na tyto objekty a vz\u00e1p\u011bt\u00ed bylo d\u00edky spektroskopick\u00fdm dat\u016fm mo\u017en\u00e9 ur\u010dit p\u0159esn\u00e9 parametry hv\u011bzd (teplotu, polom\u011br) a n\u00e1sledn\u011b kombinac\u00ed spektroskopick\u00fdch dat a dat z mise TESS i p\u0159esn\u00e9 planet\u00e1rn\u00ed parametry a potvrdit tak fakt, \u017ee se opravdu jedn\u00e1 o nov\u00e9 planety. Uk\u00e1zalo se, \u017ee planeta TOI-1268b je planeta s hmotnost\u00ed na\u0161eho Saturnu, kter\u00e1 ob\u00edh\u00e1 svoji hv\u011bzdu p\u0159ibli\u017en\u011b jednou za 8 dn\u00ed. Jedn\u00e1 se o objev dosud nejmlad\u0161\u00ed exoplanety podobn\u00e9 Saturnu a p\u0159edpokl\u00e1d\u00e1 se, \u017ee na n\u00ed doch\u00e1z\u00ed k vypa\u0159ov\u00e1n\u00ed atmosf\u00e9ry vlivem vysok\u00e9 radiace p\u0159ij\u00edman\u00e9 od mate\u0159sk\u00e9 hv\u011bzdy. Planeta TOI-1181b ob\u00edh\u00e1 podobra slune\u010dn\u00edho typu, co\u017e je hv\u011bzda, kter\u00e1 je na konci sv\u00e9 \u017eivotn\u00ed pout\u011b, i kdy\u017e j\u00ed zb\u00fdv\u00e1 st\u00e1le n\u011bkolik miliard let, nicm\u00e9n\u011b planet u takov\u00fdch hv\u011bzd nen\u00ed zn\u00e1mo mnoho. Planeta TOI-1516b je typick\u00fd hork\u00fd Jupiter, kter\u00fd ob\u00edh\u00e1 svoji hv\u011bzdu slune\u010dn\u00edho typu za zhruba 2 dny. <\/p><\/p>\n\n\n\n
Satelit Transiting Exoplanet Survey Satellite je celooblohov\u00e1 pr\u016fzkumn\u00e1 mise NASA, kter\u00e1 objev\u00ed tis\u00edce exoplanet kolem bl\u00edzk\u00fdch jasn\u00fdch hv\u011bzd. TESS odstartoval 18. dubna 2018 na palub\u011b rakety SpaceX Falcon 9. <\/p><\/p>\n\n\n\n
P\u0159evzato: Str\u00e1nky ASU<\/a><\/p>\n\n\n\n <\/p>\n","protected":false},"excerpt":{"rendered":" V prvn\u00edm \u010dtvrtlet\u00ed roku 2022 ond\u0159ejov\u0161t\u00ed astronomov\u00e9 potvrdili objev \u010dty\u0159 nov\u00fdch plynn\u00fdch exoplanet. Jedn\u00e1 se o ob\u0159\u00ed planety podobn\u00e9 na\u0161emu Jupiteru a Saturnu. T\u00edm ale ve\u0161ker\u00e1 podobnost<\/p>\n","protected":false},"author":1,"featured_media":2334,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38,32,43],"tags":[],"class_list":["post-2331","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-exoplanety","category-novinky","category-perek-2m"],"_links":{"self":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/2331","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=2331"}],"version-history":[{"count":3,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/2331\/revisions"}],"predecessor-version":[{"id":2338,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/2331\/revisions\/2338"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media\/2334"}],"wp:attachment":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media?parent=2331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/categories?post=2331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/tags?post=2331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Dal\u0161\u00ed informace a odkazy<\/h4>\n\n\n\n