{"id":3123,"date":"2024-06-27T14:26:56","date_gmt":"2024-06-27T12:26:56","guid":{"rendered":"https:\/\/stel.asu.cas.cz\/cs\/?p=3123"},"modified":"2024-06-27T14:26:57","modified_gmt":"2024-06-27T12:26:57","slug":"vsechny-tvary-mlhoviny-v-okoli-r-aquarii","status":"publish","type":"post","link":"https:\/\/stel.asu.cas.cz\/cs\/2024\/06\/27\/vsechny-tvary-mlhoviny-v-okoli-r-aquarii\/","title":{"rendered":"V\u0161echny tvary mlhoviny v\u00a0okol\u00ed R Aquarii"},"content":{"rendered":"\n<p>Hv\u011bzdy z\u016fst\u00e1vaj\u00ed jasn\u00fdmi body, i&nbsp;kdy\u017e je pozorujeme sebev\u011bt\u0161\u00edmi dalekohledy. Ov\u0161em n\u011bkter\u00e9 procesy formuj\u00ed v&nbsp;okol\u00ed t\u011bchto hv\u011bzd roztodivn\u00e9 struktury plynu a&nbsp;prachu. Jednou z&nbsp;takov\u00fdch hv\u011bzd je R Aquarii, n\u00e1m nejbli\u017e\u0161\u00ed symbiotick\u00e1 dvojhv\u011bzda. Tiina Liimets ze Stel\u00e1rn\u00edho odd\u011blen\u00ed byla u&nbsp;odhalovan\u00ed historie podivuhodn\u00fdch \u00fatvar\u016f mlhoviny v&nbsp;bezprost\u0159edn\u00edm okol\u00ed t\u00e9to hv\u011bzdy.<\/p>\n\n\n\n<p>Symbiotick\u00e1 hv\u011bzda je typ bin\u00e1rn\u00edho hv\u011bzdn\u00e9ho syst\u00e9mu, kde dv\u011b hv\u011bzdy r\u016fzn\u00fdch typ\u016f interaguj\u00ed prost\u0159ednictv\u00edm v\u00fdm\u011bny hmoty. Tyto syst\u00e9my jsou fascinuj\u00edc\u00ed kv\u016fli jejich slo\u017eit\u00e9 fyzice a&nbsp;dynamice, kter\u00e1 se projevuje v&nbsp;\u0161irok\u00e9m spektru elektromagnetick\u00e9ho z\u00e1\u0159en\u00ed. Symbiotick\u00e9 hv\u011bzdy jsou slo\u017eeny ze studen\u00e9 slo\u017eky, kdy se obvykle se jedn\u00e1 o&nbsp;rud\u00e9ho obra, \u010dasto o&nbsp;prom\u011bnnou hv\u011bzdu typu Mira. Tyto hv\u011bzdy jsou velk\u00e9, chladn\u00e9 a&nbsp;maj\u00ed vysokou sv\u00edtivost, ale n\u00edzkou povrchovou teplotu a&nbsp;pokud je to mirida, pulsuje s&nbsp;dlouhou periodou v&nbsp;des\u00edtk\u00e1ch a\u017e stovk\u00e1ch dn\u016f. Druhou slo\u017ekou je pak hork\u00fd kompaktn\u00ed objekt, nej\u010dast\u011bji b\u00edl\u00fd trpasl\u00edk. Tento objekt akretuje hmotu z&nbsp;rud\u00e9ho obra. Symbiotick\u00e9 hv\u011bzdy jsou zdroji cel\u00e9ho spektra elektromagnetick\u00e9ho z\u00e1\u0159en\u00ed, kter\u00e9 m\u00e1 sv\u016fj p\u016fvod v&nbsp;procesech spojen\u00fdch s&nbsp;akrec\u00ed l\u00e1tky. Z&nbsp;pozorovatelsk\u00e9ho pohledu m\u00edvaj\u00ed velmi bohat\u00e9 spektrum emisn\u00edch \u010dar, kter\u00e9 vznikaj\u00ed v&nbsp;kombinaci z\u00e1\u0159en\u00ed hork\u00e9ho akre\u010dn\u00edho disku, emis\u00ed z&nbsp;okoln\u00ed hmoty a&nbsp;z\u00e1\u0159en\u00ed b\u00edl\u00e9ho trpasl\u00edka. Materi\u00e1l vyvr\u017een\u00fd dvojhv\u011bzdou m\u016f\u017ee vytv\u00e1\u0159et mlhoviny, kter\u00e9 obklopuj\u00ed syst\u00e9m. V&nbsp;n\u011bkter\u00fdch p\u0159\u00edpadech se tvo\u0159\u00ed bipol\u00e1rn\u00ed struktury a&nbsp;v\u00fdtrysky, kter\u00e9 jsou v\u00fdsledkem interakc\u00ed mezi rychle se pohybuj\u00edc\u00ed hmotou z&nbsp;b\u00edl\u00e9ho trpasl\u00edka a&nbsp;pomaleji se pohybuj\u00edc\u00edm hv\u011bzdn\u00fdm v\u011btrem z&nbsp;rud\u00e9ho obra.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"300\" src=\"https:\/\/stel.asu.cas.cz\/cs\/wp-content\/uploads\/2024\/06\/273-raqr-liimets.png\" alt=\"\" class=\"wp-image-3124\" srcset=\"https:\/\/stel.asu.cas.cz\/cs\/wp-content\/uploads\/2024\/06\/273-raqr-liimets.png 600w, https:\/\/stel.asu.cas.cz\/cs\/wp-content\/uploads\/2024\/06\/273-raqr-liimets-300x150.png 300w, https:\/\/stel.asu.cas.cz\/cs\/wp-content\/uploads\/2024\/06\/273-raqr-liimets-18x9.png 18w, https:\/\/stel.asu.cas.cz\/cs\/wp-content\/uploads\/2024\/06\/273-raqr-liimets-24x12.png 24w, https:\/\/stel.asu.cas.cz\/cs\/wp-content\/uploads\/2024\/06\/273-raqr-liimets-36x18.png 36w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption class=\"wp-element-caption\">Porovn\u00e1n\u00ed kompozitn\u00edho sn\u00edmku okol\u00ed hv\u011bzdy R Aqr s renderovan\u00fdm sn\u00edmkem sestaven\u00fdm na z\u00e1klad\u011b morfologicko-kinematick\u00e9ho modelu. Zelen\u00e9 odst\u00edny reprezentuj\u00ed sn\u00edmek v zak\u00e1zan\u00e9 \u010d\u00e1\u0159e ionizovan\u00e9ho kysl\u00edku, \u010derven\u00e9 pozorov\u00e1n\u00ed ve vod\u00edkov\u00e9 \u010d\u00e1\u0159e H\u03b1. Modr\u00e1 barva pak odpov\u00eddaj\u00ed m\u011bkk\u00e9mu rentgenov\u00e9mu z\u00e1\u0159en\u00ed.<\/figcaption><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<p><a href=\"https:\/\/www.asu.cas.cz\/articles\/2286\/19\/na-cem-pracujeme-vsechny-tvary-mlhoviny-v-okoli-r-aquarii\" target=\"_blank\" rel=\"noreferrer noopener\">Pokra\u010dov\u00e1n\u00ed na webu 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 href=\"https:\/\/www.asu.cas.cz\/articles\/2286\/19\/na-cem-pracujeme-vsechny-tvary-mlhoviny-v-okoli-r-aquarii\" target=\"_blank\" rel=\"noreferrer noopener\">Na \u010dem pracujeme: V\u0161echny tvary mlhoviny v&nbsp;okol\u00ed R Aquarii<\/a> (M. \u0160vanda, web ASU)<\/li>\n\n\n\n<li>E. Santamar\u00eda, J. A. Toal\u00e1, T. Liimets a\u00a0kol., <em>Shaping the nebula around the symbiotic system R Aquarii<\/em>, Montly Notices of the Royal Astronomical Society v\u00a0tisku, preprint <a href=\"https:\/\/arxiv.org\/abs\/2404.17710\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv:2404.17710<\/a><\/li>\n\n\n\n<li>kontakt:\u00a0Dr. Tiina Liimets, Ph.D., tiina.liimets@asu.cas.cz<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Hv\u011bzdy z\u016fst\u00e1vaj\u00ed jasn\u00fdmi body, i&nbsp;kdy\u017e je pozorujeme sebev\u011bt\u0161\u00edmi dalekohledy. Ov\u0161em n\u011bkter\u00e9 procesy formuj\u00ed v&nbsp;okol\u00ed t\u011bchto hv\u011bzd roztodivn\u00e9 struktury plynu a&nbsp;prachu. Jednou z&nbsp;takov\u00fdch hv\u011bzd je R<\/p>\n","protected":false},"author":1,"featured_media":3128,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37,32],"tags":[],"class_list":["post-3123","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\/3123","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=3123"}],"version-history":[{"count":4,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/3123\/revisions"}],"predecessor-version":[{"id":3129,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/3123\/revisions\/3129"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media\/3128"}],"wp:attachment":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media?parent=3123"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/categories?post=3123"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/tags?post=3123"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}