{"id":3253,"date":"2025-01-13T11:39:54","date_gmt":"2025-01-13T10:39:54","guid":{"rendered":"https:\/\/stel.asu.cas.cz\/cs\/?p=3253"},"modified":"2025-01-13T11:39:54","modified_gmt":"2025-01-13T10:39:54","slug":"zbesily-tanec-obrich-exoplanet","status":"publish","type":"post","link":"https:\/\/stel.asu.cas.cz\/cs\/2025\/01\/13\/zbesily-tanec-obrich-exoplanet\/","title":{"rendered":"Zb\u011bsil\u00fd tanec ob\u0159\u00edch exoplanet"},"content":{"rendered":"\n<p><strong>Astronomov\u00e9 objevili planet\u00e1rn\u00ed syst\u00e9m, kter\u00fd vykazuje dosud nejsiln\u011bj\u0161\u00ed pozorovanou gravita\u010dn\u00ed interakci mezi dv\u011bma ob\u0159\u00edmi planetami. Tento gravita\u010dn\u00ed tanec je tak siln\u00fd, \u017ee zp\u016fsobuje zd\u00e1nliv\u00e9 zm\u011bny periody ob\u011bhu planet v&nbsp;\u0159\u00e1du dn\u00ed! Planet\u00e1rn\u00ed syst\u00e9m TOI-4504, kter\u00fd nav\u00edc tak\u00e9 host\u00ed malou planetu o&nbsp;velikosti mezi Zem\u00ed a&nbsp;Neptunem, p\u0159edstavuje velmi d\u016fle\u017eit\u00fd objev, kter\u00fd astronom\u016fm umo\u017en\u00ed l\u00e9pe porozum\u011bt formov\u00e1n\u00ed a&nbsp;v\u00fdvoji planet\u00e1rn\u00edch soustav.&nbsp;<\/strong><\/p>\n\n\n\n<p>Planet\u00e1rn\u00ed syst\u00e9m TOI-4504, objeven\u00fd vesm\u00edrnou mis\u00ed TESS v&nbsp;souhv\u011bzd\u00ed Lodn\u00ed k\u00fdl na ji\u017en\u00ed obloze, se skl\u00e1d\u00e1 ze dvou planet o&nbsp;n\u011bco v\u011bt\u0161\u00edch ne\u017e n\u00e1\u0161 Jupiter a&nbsp;jednoho mini Neptunu. Planeta TOI-4504 c s&nbsp;hmotnost\u00ed 3,8 hmotnosti Jupitera p\u0159ech\u00e1z\u00ed z&nbsp;na\u0161eho pohledu p\u0159es disk sv\u00e9 mate\u0159sk\u00e9 hv\u011bzdy a&nbsp;zp\u016fsobuje tak m\u00edrn\u00fd pokles jej\u00ed jasnosti a&nbsp;my pak m\u016f\u017eeme pozorovat tzv. tranzity pr\u016fm\u011brn\u011b jednou za 82 dn\u00ed, co\u017e je doba jej\u00edho ob\u011bhu. Orbita TOI-4504 c je gravita\u010dn\u011b ovliv\u0148ov\u00e1na netranzituj\u00edc\u00ed planetou TOI-4504 d s&nbsp;hmotnost\u00ed 1,4x v\u011bt\u0161\u00ed ne\u017e je hmotnost Jupitera. Podle konkr\u00e9tn\u00ed konfigurace planet m\u016f\u017eeme pozorovat d\u0159\u00edv\u011bj\u0161\u00ed nebo pozd\u011bj\u0161\u00ed okam\u017eiky pr\u016fchodu planety TOI-4504 c p\u0159ed hv\u011bzdou, tedy variaci v&nbsp;okam\u017eic\u00edch tranzit\u016f. Amplituda t\u011bchto zm\u011bn \u010din\u00ed v&nbsp;p\u0159\u00edpad\u011b planety c 4 dny, co\u017e je nejv\u00edce, co bylo doposud detekov\u00e1no. Kdyby tranzitovala planeta d, kter\u00e1 byla d\u00edky zm\u011bn\u00e1m v&nbsp;period\u011b planety c objevena, pozorovali bychom dokonce zm\u011bny v&nbsp;okam\u017eic\u00edch tranzit\u016f s&nbsp;amplitudou 6 dn\u00ed.&nbsp;<\/p>\n\n\n\n<p>Hlavn\u00ed autorkou studie, kter\u00e1 byla publikov\u00e1na v&nbsp;Astrophysical Journal Letters, je doktorsk\u00e1 studentka Michaela V\u00edtkov\u00e1 z&nbsp;Masarykovy univerzity v&nbsp;Brn\u011b, kter\u00e1 sv\u016fj v\u00fdzkum vedla na Astronomick\u00e9m \u00fastavu AV&nbsp;\u010cR v&nbsp;Ond\u0159ejov\u011b. \u201cByli jsme velmi p\u0159ekvapeni, kdy\u017e jsme detekovali zm\u011bny s&nbsp;tak velkou amplitudou. Dosavadn\u00ed rekordman m\u011bl toti\u017e amplitudu zm\u011bn polovi\u010dn\u00ed a&nbsp;jednalo se o&nbsp;\u00fapln\u011b jin\u00fd typ planety,\u201d \u0159\u00edk\u00e1 V\u00edtkov\u00e1. Zm\u011bny okam\u017eik\u016f tranzit\u016f jsou zvl\u00e1\u0161t\u011b v\u00fdrazn\u00e9 u&nbsp;planet, kter\u00e9 jsou v&nbsp;tzv. rezonanci. To znamen\u00e1, \u017ee periody jejich ob\u011b\u017en\u00fdch dob jsou v&nbsp;pom\u011bru mal\u00fdch cel\u00fdch \u010d\u00edsel. To je i&nbsp;p\u0159\u00edpad planet TOI-4504 c a&nbsp;d, kter\u00e9 maj\u00ed pom\u011bry ob\u011b\u017en\u00fdch dob bl\u00edzko k&nbsp;2:1.<\/p>\n\n\n\n<p><strong>Syst\u00e9my s&nbsp;hmotn\u00fdmi planetami na drah\u00e1ch s&nbsp;periodami v&nbsp;\u0159\u00e1du des\u00edtek dn\u00ed jsou pro astronomy extr\u00e9mn\u011b d\u016fle\u017eit\u00e9, proto\u017ee mohou napov\u011bd\u011bt n\u011bco o&nbsp;historii a&nbsp;evoluci planet\u00e1rn\u00edch syst\u00e9m\u016f.<\/strong>&nbsp;\u201cV\u00fdzkum syst\u00e9mu TOI-4504 up\u0159ednost\u0148uje sc\u00e9n\u00e1\u0159, \u017ee by pozorovan\u00e1 rezonantn\u00ed konfigurace v&nbsp;syst\u00e9mu mohla b\u00fdt v\u00fdsledkem hladk\u00e9 migrace b\u011bhem formov\u00e1n\u00ed v&nbsp;protoplanet\u00e1rn\u00edm disku sp\u00ed\u0161e ne\u017e interakc\u00ed mezi planetami v&nbsp;syst\u00e9mu, p\u0159\u00edpadn\u011b n\u011bjak\u00fdm jin\u00fdm t\u011blesem,\u201d vysv\u011btluje Trifon Trifonov z&nbsp;MPIA v&nbsp;N\u011bmecku.&nbsp;<\/p>\n\n\n\n<p>Studie byla zalo\u017eena na zm\u011bn\u00e1ch jasnosti patrn\u00fdch v&nbsp;datech z&nbsp;vesm\u00edrn\u00e9 mise TESS a&nbsp;anal\u00fdze spekter ze spektrografu FEROS na dalekohledu&nbsp;&nbsp;s&nbsp;pr\u016fm\u011brem 2,2 m um\u00edst\u011bn\u00fdm v&nbsp;Chile. Auto\u0159i tak\u00e9 potvrdili, \u017ee se v&nbsp;syst\u00e9mu nal\u00e9z\u00e1 je\u0161t\u011b jedna, men\u0161\u00ed planeta s&nbsp;hmotnost\u00ed asi 10 hmotnost\u00ed Zem\u011b, na vnit\u0159n\u00ed orbit\u011b s&nbsp;periodou ob\u011bhu 2,4 dne. \u201cSyst\u00e9m TOI-4504 je velmi komplexn\u00ed a&nbsp;z\u00edskat dostatek dat pro dobrou anal\u00fdzu vy\u017eaduje \u010das. Na\u0161e studie demonstruje v\u00fdhody velk\u00fdch spoluprac\u00ed,\u201d dopl\u0148uje Rafael Brahm z&nbsp;UAI v&nbsp;Chile a&nbsp;koordin\u00e1tor konsorcia WINE. \u201cV&nbsp;budoucnu m\u016f\u017eeme o\u010dek\u00e1vat objevy planet, kter\u00e9 vykazuj\u00ed je\u0161t\u011b v\u011bt\u0161\u00ed zm\u011bny okam\u017eik\u016f tranzit\u016f, ne\u017e TOI-4504 c,\u201d uzav\u00edr\u00e1 Marek Skarka z&nbsp;Astronomick\u00e9ho \u00fastavu AV&nbsp;\u010cR.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Popis obr\u00e1zku<\/h4>\n\n\n\n<p>Um\u011bleck\u00e1 p\u0159edstava syst\u00e9mu TOI-4504 vygenerovan\u00e1 DeepAI.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Kontakty a dal\u0161\u00ed informace<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>P\u0159evzato z webu ASU: <a href=\"https:\/\/www.asu.cas.cz\/articles\/2363\/19\/zbesily-tanec-obrich-exoplanet\" data-type=\"link\" data-id=\"https:\/\/www.asu.cas.cz\/articles\/2363\/19\/zbesily-tanec-obrich-exoplanet\" target=\"_blank\" rel=\"noreferrer noopener\">Zb\u011bsil\u00fd tanec ob\u0159\u00edch exoplanet<\/a><\/li>\n\n\n\n<li>V\u011bdeck\u00fd \u010dl\u00e1nek: <a href=\"https:\/\/iopscience.iop.org\/article\/10.3847\/2041-8213\/ad9a53\" target=\"_blank\" rel=\"noreferrer noopener\">Exceptionally Large Transit Timing Variations Induced by Two Resonant Warm Gas Giants in a Three-planet System<\/a>, DOI: 10.3847\/2041-8213\/ad9a53<\/li>\n\n\n\n<li>Kontakt: Dr. Marek Skarka, vedouc\u00ed t\u00fdmu; Astronomick\u00fd \u00fastav AV\u00a0\u010cR, Stel\u00e1rn\u00ed odd\u011blen\u00ed, skupina v\u00fdzkumu exoplanet; Email: skarka@asu.cas.cz<\/li>\n\n\n\n<li>Kontakt: Mgr, Michaela V\u00edtkov\u00e1, hlavn\u00ed autor; Astronomick\u00fd \u00fastav AV\u00a0\u010cR, Stel\u00e1rn\u00ed odd\u011blen\u00ed, skupina v\u00fdzkumu exoplanet; Masarykova univerzita Brno; Email:\u00a0vitkova@asu.cas.cz<\/li>\n\n\n\n<li>Kontakt: Pavel Suchan; Tiskov\u00fd tajemn\u00edk Astronomick\u00e9ho \u00fastavu AV\u00a0\u010cR; Email:\u00a0suchan@astro.cz; Tel: 737\u00a0322\u00a0815<\/li>\n\n\n\n<li>Tiskov\u00e1 zpr\u00e1va ke sta\u017een\u00ed v <a href=\"https:\/\/www.asu.cas.cz\/files\/articles\/2025\/02363-zbesily-tanec-obrich-exoplanet\/tz-tanec-exoplanet-2025.docx\" target=\"_blank\" rel=\"noreferrer noopener\">DOC<\/a><\/li>\n<\/ul>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Astronomov\u00e9 objevili planet\u00e1rn\u00ed syst\u00e9m, kter\u00fd vykazuje dosud nejsiln\u011bj\u0161\u00ed pozorovanou gravita\u010dn\u00ed interakci mezi dv\u011bma ob\u0159\u00edmi planetami. Tento gravita\u010dn\u00ed tanec je tak siln\u00fd, \u017ee zp\u016fsobuje zd\u00e1nliv\u00e9 zm\u011bny<\/p>\n","protected":false},"author":1,"featured_media":3256,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38,32],"tags":[],"class_list":["post-3253","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\/3253","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=3253"}],"version-history":[{"count":2,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/3253\/revisions"}],"predecessor-version":[{"id":3257,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/3253\/revisions\/3257"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media\/3256"}],"wp:attachment":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media?parent=3253"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/categories?post=3253"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/tags?post=3253"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}