LOND\u00ddN – Astron\u00f3movia objavili 27 kandid\u00e1tskych plan\u00e9t, ktor\u00e9 obiehaj\u00fa okolo dvoch hviezd, podobne ako fikt\u00edvna p\u00fa\u0161tna plan\u00e9ta Tatooine z filmov\u00e9ho sveta Star Wars. V\u00fdsledky \u0161t\u00fadie, na ktor\u00fa upozornil denn\u00edk The Guardian, vedci publikovali symbolicky 4. m\u00e1ja, kedy fan\u00fa\u0161ikovia oslavuj\u00fa neofici\u00e1lny De\u0148 Star Wars.<\/p>\n
Astron\u00f3movia doteraz potvrdili existenciu zhruba 18 takzvan\u00fdch cirkumbin\u00e1rnych plan\u00e9t, ktor\u00e9 obiehaj\u00fa dvojicu hviezd. Naproti tomu tak\u00fdch plan\u00e9t, ktor\u00e9 obiehaj\u00fa iba jednu hviezdu ako Zem okolo Slnka, je zn\u00e1mych viac ako 6000.<\/p>\n
Nov\u00fdch kandid\u00e1tov astron\u00f3movia identifikovali anal\u00fdzou d\u00e1t z vesm\u00edrneho teleskopu Transiting Exoplanet Survey Satellite (TESS) americk\u00e9ho N\u00e1rodn\u00e9ho \u00faradu pre letectvo a vesm\u00edr (NASA). Vyu\u017eili pritom met\u00f3du zvan\u00fa apsid\u00e1lna precesia, ktor\u00e1 sleduje ve\u013emi jemn\u00e9 zmeny v na\u010dasovan\u00ed vz\u00e1jomn\u00fdch z\u00e1krytov dvoch hviezd v dvojhviezdnom syst\u00e9me. Tieto odch\u00fdlky m\u00f4\u017eu nazna\u010dova\u0165, \u017ee ich pohyb ovplyv\u0148uje e\u0161te \u010fal\u0161ie teleso, teda plan\u00e9ta obiehaj\u00faca obe hviezdy.<\/p>\n
Sledovanie presn\u00e9ho na\u010dasovania<\/p>\n
,,Ak sledujeme presn\u00e9 na\u010dasovanie t\u00fdchto zatmen\u00ed, m\u00f4\u017ee n\u00e1m to uk\u00e1za\u0165, \u017ee v syst\u00e9me p\u00f4sob\u00ed e\u0161te \u010fal\u0161ie teleso,“ uviedla hlavn\u00e1 autorka \u0161t\u00fadie Margo Thorntonov\u00e1 zo sydneyskej Univerzity Nov\u00e9ho Ju\u017en\u00e9ho Walesu.<\/p>\n
Mo\u017en\u00e9 plan\u00e9ty sa nach\u00e1dzaj\u00fa vo vzdialenosti asi 650 a\u017e 18.000 sveteln\u00fdch rokov od Zeme a ich ve\u013ekos\u0165 sa pod\u013ea odhadov pohybuje od \u00farovne Nept\u00fanu a\u017e po objekty pribli\u017ene desa\u0165kr\u00e1t hmotnej\u0161ie ako Jupiter, najv\u00e4\u010d\u0161ia plan\u00e9ta na\u0161ej s\u00fastavy. S\u00fa\u010dasn\u00e9 d\u00e1ta v\u0161ak nedok\u00e1\u017eu presne ur\u010di\u0165, \u010di ide o men\u0161ie plan\u00e9ty na bli\u017e\u0161\u00edch dr\u00e1hach, alebo hmotnej\u0161ie teles\u00e1 obiehaj\u00face vo v\u00e4\u010d\u0161ej vzdialenosti. Na potvrdenie bude pod\u013ea odborn\u00edkov potrebn\u00e9 \u010fal\u0161ie meranie.<\/p>\n
Doteraj\u0161ie objavy cirkumbin\u00e1rnych plan\u00e9t vych\u00e1dzali predov\u0161etk\u00fdm z takzvanej tranzitnej met\u00f3dy, kedy plan\u00e9ta pri prechode pred hviezdou sp\u00f4sob\u00ed pokles jej jasnosti. T\u00e1to met\u00f3da je ale z\u00e1visl\u00e1 na presnom nato\u010den\u00ed syst\u00e9mu vo\u010di Zemi, tak\u017ee mnoho plan\u00e9t m\u00f4\u017ee zosta\u0165 skryt\u00e9.<\/p>\n
V\u00fdhody novej met\u00f3dy<\/p>\n
Pod\u013ea autorov \u0161t\u00fadie by nov\u00e1 met\u00f3da mohla v\u00fdrazne roz\u0161\u00edri\u0165 po\u010det zn\u00e1mych plan\u00e9t v syst\u00e9moch dvojhviezd, vr\u00e1tane t\u00fdch, ktor\u00fdch dr\u00e1hy nie s\u00fa v rovine obehu hviezd alebo obiehaj\u00fa vo v\u00e4\u010d\u0161ej vzdialenosti. To m\u00f4\u017ee pom\u00f4c\u0165 lep\u0161ie porozumie\u0165 tomu, ako tak\u00e9 planet\u00e1rne s\u00fastavy vznikaj\u00fa a ako sa vyv\u00edjaj\u00fa.<\/p>\n
Astrofyzici upozor\u0148uj\u00fa, \u017ee niektor\u00e9 z t\u00fdchto svetov by mohli pripom\u00edna\u0165 aj fikt\u00edvne Tatooine, pokia\u013e sa nach\u00e1dzaj\u00fa v ob\u00fdvate\u013enej z\u00f3ne medzi oboma hviezdami. Denn\u00edk The Guardian z\u00e1rove\u0148 pripom\u00edna, \u017ee v roku 1977, ke\u010f mal premi\u00e9ru prv\u00fd film zo s\u00e9rie Star Wars, \u013eudstvo o existencii exoplan\u00e9t \u2013 teda plan\u00e9t mimo na\u0161ej Slne\u010dnej s\u00fastavy \u2013 e\u0161te v\u00f4bec nevedelo.<\/p>\n
,,V astron\u00f3mii je ve\u013ea vec\u00ed, ktor\u00e9 si mo\u017eno len \u0165a\u017eko konkr\u00e9tne predstavi\u0165,“ uviedol spoluautor \u0161t\u00fadie Ben Montet. ,,V\u010faka sl\u00e1vnej sc\u00e9ne z\u00e1padu slnka na Tatooine v prvom filme Star Wars si ale dnes dok\u00e1\u017ee ka\u017ed\u00fd predstavi\u0165, ako tak\u00e1 plan\u00e9ta obiehaj\u00faca dve slnk\u00e1 vyzer\u00e1 a ak\u00e9 by bolo na nej st\u00e1\u0165,“ dodal.<\/p>\n","protected":false},"excerpt":{"rendered":"LOND\u00ddN – Astron\u00f3movia objavili 27 kandid\u00e1tskych plan\u00e9t, ktor\u00e9 obiehaj\u00fa okolo dvoch hviezd, podobne ako fikt\u00edvna p\u00fa\u0161tna plan\u00e9ta Tatooine…\n","protected":false},"author":2,"featured_media":64090,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[5252,33,25000,43,40,42,36,86,50,25001,2176,49,48],"class_list":{"0":"post-64089","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-svet","8":"tag-hviezdy","9":"tag-news","10":"tag-planety","11":"tag-sk","12":"tag-slovak","13":"tag-slovencina","14":"tag-spravy","15":"tag-star-wars","16":"tag-svet","17":"tag-tatooine","18":"tag-vesmir","19":"tag-world","20":"tag-world-news"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@sk\/116534960615474933","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts\/64089","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/comments?post=64089"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts\/64089\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/media\/64090"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/media?parent=64089"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/categories?post=64089"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/tags?post=64089"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}