{"id":133174,"date":"2023-01-11T22:33:00","date_gmt":"2023-01-11T20:33:00","guid":{"rendered":"https:\/\/life.karpat.in.ua\/?p=133174"},"modified":"2023-01-11T19:21:55","modified_gmt":"2023-01-11T17:21:55","slug":"megtalaltak-a-tudosok-a-tejutrendszer-legszelso-hatarat","status":"publish","type":"post","link":"https:\/\/life.karpat.in.ua\/?p=133174&lang=hu","title":{"rendered":"Megtal\u00e1lt\u00e1k a tud\u00f3sok a Tej\u00fatrendszer legsz\u00e9ls\u0151 hat\u00e1r\u00e1t"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>A Tej\u00fatrendszer spir\u00e1lis korongja nagyj\u00e1b\u00f3l 100 ezer f\u00e9ny\u00e9v \u00e1tm\u00e9r\u0151j\u0171. Ehhez k\u00e9pest a galaxis sz\u00e9le t\u00edzszer ilyen messze van a k\u00f6z\u00e9ppontt\u00f3l \u2013 figyelt\u00e9k meg kutat\u00f3k.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A Tej\u00fatrendszerr\u0151l ma m\u00e1r sok mindent tudnak a szakemberek, ez azonban nem jelenti azt, hogy ne lenne m\u00e9g j\u00f3 n\u00e9h\u00e1ny megv\u00e1laszolatlan k\u00e9rd\u00e9s a galaxisunkkal kapcsolatban. Az egyik ilyen p\u00e9ld\u00e1ul, hogy val\u00f3j\u00e1ban mekkora objektumr\u00f3l besz\u00e9lhet\u00fcnk. A csillag\u00e1szoknak most ezt is siker\u00fclt meghat\u00e1rozniuk \u2013 \u00edrta meg az EurekAlert tudom\u00e1nyos port\u00e1l.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"370\" src=\"https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2023\/01\/67ef0f45-0e5f-4169-bb44-d0b68a773c20.jpg\" alt=\"\" class=\"wp-image-133175\" srcset=\"https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2023\/01\/67ef0f45-0e5f-4169-bb44-d0b68a773c20.jpg 800w, https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2023\/01\/67ef0f45-0e5f-4169-bb44-d0b68a773c20-300x139.jpg 300w, https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2023\/01\/67ef0f45-0e5f-4169-bb44-d0b68a773c20-768x355.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">A Kaliforniai Egyetem tud\u00f3sai a Tej\u00fatrendszer k\u00fcls\u0151 hat\u00e1rainak keres\u00e9se sor\u00e1n 208 \u00faj csillagot fedeztek fel. Ezek a galaxis perem\u00e9n helyezkednek el, a t\u0151l\u00fcnk legt\u00e1volabbi pedig nagyj\u00e1b\u00f3l 1 milli\u00f3 f\u00e9ny\u00e9vre van \u2013 fele olyan messzire, mint az Androm\u00e9da-galaxis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A 208 \u00faj csillag RR Lyrae-t\u00edpus\u00fa csillag, amely annyit jelent, hogy a f\u00e9nyerej\u00fck a F\u00f6ldr\u0151l n\u00e9zve v\u00e1ltozhat. Ezek az \u00e9gitestek jellemz\u0151en \u00f6regek, id\u0151nk\u00e9nt vil\u00e1gosabbak lesznek, azt\u00e1n elhalv\u00e1nyulnak. Ennek k\u00f6sz\u00f6nhet\u0151en a tud\u00f3sok kisz\u00e1m\u00edthatj\u00e1k, hogy milyen messzire vannak.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2023\/01\/975bcd48-3015-413d-b162-19295286c443.jpg\" alt=\"\" class=\"wp-image-133176\" width=\"696\" height=\"717\" srcset=\"https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2023\/01\/975bcd48-3015-413d-b162-19295286c443.jpg 640w, https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2023\/01\/975bcd48-3015-413d-b162-19295286c443-291x300.jpg 291w\" sizes=\"auto, (max-width: 696px) 100vw, 696px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Raja GuhaThakurta, a tanulm\u00e1ny egyik szerz\u0151je szerint a mostani sz\u00e1m\u00edt\u00e1sok megmutatt\u00e1k, hogy a Tej\u00fatrendszer \u00e9s az Androm\u00e9da is olyan nagyok, hogy alig van hely a k\u00e9t galaxis k\u00f6z\u00f6tt.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A kutat\u00f3k szerint a spir\u00e1lis korong, amelynek egyik karj\u00e1n a Naprendszer is tal\u00e1lhat\u00f3, nagyj\u00e1b\u00f3l 100 ezer f\u00e9ny\u00e9v. A Tej\u00fatrendszert azonban k\u00f6r\u00fclveszi egy bels\u0151 \u00e9s egy k\u00fcls\u0151 halo (gl\u00f3ria), amelynek legsz\u00e9ls\u0151 hat\u00e1ra 1,04 milli\u00f3 f\u00e9ny\u00e9vre van a galaxis k\u00f6z\u00e9ppontj\u00e1t\u00f3l. Jelenlegi ismereteink szerint ez jelenti a Tej\u00fatrendszer hat\u00e1r\u00e1t.<\/p>\n\n\n\n<p class=\"has-text-align-right wp-block-paragraph\"><strong><a href=\"https:\/\/hvg.hu\/tudomany\/20230110_tejutrendszer_legszele_galaxis_urkutatas_halo_gloria#rss\" target=\"_blank\" rel=\"noreferrer noopener\">(hvg.hu)<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A Tej\u00fatrendszer spir\u00e1lis korongja nagyj\u00e1b\u00f3l 100 ezer f\u00e9ny\u00e9v \u00e1tm\u00e9r\u0151j\u0171. Ehhez k\u00e9pest a galaxis sz\u00e9le t\u00edzszer ilyen messze van a k\u00f6z\u00e9ppontt\u00f3l \u2013 figyelt\u00e9k meg kutat\u00f3k.<\/p>\n","protected":false},"author":12,"featured_media":133175,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41,49,598,39],"tags":[442007,15144],"class_list":["post-133174","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cikkek","category-hirek","category-tudomany","category-vilag","tag-hatarok","tag-tejutrendszer"],"_links":{"self":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/133174","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=133174"}],"version-history":[{"count":1,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/133174\/revisions"}],"predecessor-version":[{"id":133178,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/133174\/revisions\/133178"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/media\/133175"}],"wp:attachment":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=133174"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=133174"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=133174"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}