{"id":47676,"date":"2018-09-21T21:18:51","date_gmt":"2018-09-21T19:18:51","guid":{"rendered":"https:\/\/osr.org\/?p=47676\/"},"modified":"2018-10-01T21:46:07","modified_gmt":"2018-10-01T19:46:07","slug":"mensa-takimyildizinin-otesinde-bir-gezegen","status":"publish","type":"post","link":"https:\/\/osr.org\/tr\/blog\/astronomi\/mensa-takimyildizinin-otesinde-bir-gezegen\/","title":{"rendered":"Mensa tak\u0131my\u0131ld\u0131z\u0131n\u0131n \u00f6tesinde bir gezegen"},"content":{"rendered":"<p>&#8220;Pi Mensae c&#8221; ad\u0131 verilen &#8220;s\u00fcper-D\u00fcnya&#8221; kategorisindeki gezegenin \u00e7ap\u0131n\u0131n D\u00fcnya&#8217;n\u0131n 2,14 kat\u0131, k\u00fctlesinin ise D\u00fcnya&#8217;n\u0131n 4,82 kat\u0131 oldu\u011fu bildirildi. Pi Mensae c&#8217;nin y\u00f6r\u00fcngesindeki y\u0131ld\u0131za, G\u00fcne\u015f&#8217;e en yak\u0131n gezegen olan Merk\u00fcr&#8217;den 50 kat daha yak\u0131n oldu\u011fu tespit belirtildi.<br \/>\n\u00d6z k\u00fctle \u00f6l\u00e7\u00fcmlerinin gezegenin b\u00fcy\u00fck \u00f6l\u00e7\u00fcde sudan olu\u015ftu\u011funa i\u015faret etti\u011fini ifade eden ABD&#8217;nin Massachusetts Teknoloji \u00dcniversitesinden (MIT) g\u00f6kbilimci Chelsea Huang, &#8220;Muhtemelen ortas\u0131nda kaya bir \u00e7ekirdek ve \u00e7evresinde hidrojen ile helyumdan olu\u015fan bir atmosfer var. Y\u00f6r\u00fcngesindeki y\u0131ld\u0131za yak\u0131nl\u0131\u011f\u0131 g\u00f6z \u00f6n\u00fcne al\u0131nd\u0131\u011f\u0131ndan yo\u011fun radyasyon nedeniyle suyun s\u00fcrekli buharla\u015fma halinde oldu\u011funu tahmin ediyoruz.&#8221; dedi.<br \/>\nG\u00f6kbilimciler daha \u00f6nce Pi Mensae y\u00f6r\u00fcngesinde G\u00fcne\u015f Sistemi&#8217;nin en b\u00fcy\u00fck gezegeni J\u00fcpiter&#8217;den 10 kat daha fazla k\u00fctleye sahip bir gaz devi gezegen, &#8220;s\u00fcper-J\u00fcpiter&#8221; ke\u015ffetmi\u015fti. <\/p>\n<p>Ke\u015ffe dair detaylar Huang ve di\u011ferleri taraf\u0131ndan &#8220;The Astrophysical Journal Letters&#8221; dergisinde yay\u0131mland\u0131.<br \/>\nTESS uydusu, NASA taraf\u0131ndan 18 Eyl\u00fcl&#8217;de SpaceX \u00fcretimi Falcon 9 roketiyle uzaya f\u0131rlat\u0131lm\u0131\u015ft\u0131. Uydunun, iki y\u0131l s\u00fcrecek ke\u015fif faaliyeti boyunca G\u00fcne\u015f Sistemi d\u0131\u015f\u0131ndaki yak\u0131n y\u0131ld\u0131z sistemlerindeki \u00f6te-gezegenlere dair kan\u0131tlar aramas\u0131 planlan\u0131yor.<br \/>\nTESS, \u00f6te-gezegenleri &#8220;ge\u00e7i\u015f&#8221; denilen bir konumda tespit etmeye \u00e7al\u0131\u015f\u0131yor. &#8220;Ge\u00e7i\u015f&#8221;, bir \u00f6te-gezegenin y\u00f6r\u00fcngesindeki y\u0131ld\u0131z\u0131n \u00f6n\u00fcnden ge\u00e7ti\u011fi an\u0131 tan\u0131ml\u0131yor. Bilim adamlar\u0131 bu anda y\u0131ld\u0131z\u0131n kameralara yans\u0131yan parlakl\u0131\u011f\u0131nda olu\u015fan azalmay\u0131 g\u00f6zleyerek, \u0131\u015f\u0131\u011f\u0131n sal\u0131m ve emilme miktarlar\u0131n\u0131 \u00f6l\u00e7erek s\u00f6z konusu gezegenlerin k\u00fctlesini, \u00f6z k\u00fctlesini ve atmosfer kompozisyonunu belirleyebiliyor.<\/p>\n<h2><span style=\"color: #15acdf\">\u0130lk \u0131\u015f\u0131k g\u00f6r\u00fcnt\u00fcs\u00fc<\/span><\/h2>\n<p>NASA\u2019n\u0131n gezegen avc\u0131s\u0131 TESS uzay arac\u0131, geli\u015fmi\u015f kamera sistemiyle yeni g\u00f6r\u00fcnt\u00fcler yakalad\u0131. G\u00f6r\u00fcnt\u00fc TESS\u2019in \u00f6n\u00fcm\u00fczdeki iki y\u0131l boyunca g\u00f6zlemleyece\u011fi 26 sekt\u00f6rden birini g\u00f6steriyor.<\/p>\n<p>NASA\u2019n\u0131n Transiting Exoplanet Survey Satellite (TESS) \u00fczerindeki kameralar\u0131 en net g\u00f6r\u00fcnt\u00fcleri yakalad\u0131. Gezegen avlayan uzay arac\u0131n\u0131n d\u00f6rt kameras\u0131 \u201cilk \u0131\u015f\u0131k\u201d g\u00f6r\u00fcnt\u00fcs\u00fcn\u00fc yakalad\u0131.<br \/>\nTESS\u2019in 7 A\u011fustos\u2019ta 30 dakikal\u0131k s\u00fcre boyunca yakalad\u0131\u011f\u0131 t\u00fcm foto\u011fraf bir d\u00fczine tak\u0131my\u0131ld\u0131z g\u00f6steriyor. Ayn\u0131 zamanda K\u00fc\u00e7\u00fck ve B\u00fcy\u00fck Macellan bulutlar\u0131n\u0131, Samanyolu y\u00f6r\u00fcngesinde d\u00f6nen iki d\u00fczensiz c\u00fcce g\u00f6l\u00fc de var.<br \/>\nAncak, TESS ekibi i\u00e7in g\u00f6r\u00fcnt\u00fcn\u00fcn ger\u00e7ekten \u00f6nemli k\u0131s\u0131mlar\u0131, potansiyel olarak daha \u00f6nce bilinmeyen gezegenlere ev sahipli\u011fi yapan y\u0131ld\u0131zlar. TESS m\u00fcd\u00fcr\u00fc George Ricker\u2019a g\u00f6re, \u201cG\u00f6ky\u00fcz\u00fcn\u00fcn g\u00fcney yar\u0131m k\u00fcresinin bu alan\u0131, yer g\u00f6zlemevlerinden \u00f6nceki \u00e7al\u0131\u015fmalara dayanarak gezegenleri ge\u00e7ti\u011fini bildi\u011fimiz bir d\u00fczineden fazla y\u0131ld\u0131z i\u00e7erir.\u201d dedi.<br \/>\nG\u00f6r\u00fcnt\u00fcler James Webb Teleskobu gibi daha geli\u015fmi\u015f sistemlere sahip ara\u00e7lara aktar\u0131larak, detayl\u0131 olarak taramalar yap\u0131lacak.  TESS bulgular\u0131n\u0131n i\u00e7inden ge\u00e7en \u0131\u015f\u0131\u011f\u0131 \u00f6l\u00e7mek i\u00e7in spektroskopiyi kullanacaklar. NASA, atmosferik kompozisyonlar\u0131n\u0131, k\u00fctlelerini ve yo\u011funluklar\u0131n\u0131 spektroskopik teknikler kullanarak bulmay\u0131 umuyor.<br \/>\nBu \u201cilk \u0131\u015f\u0131k\u201d g\u00f6r\u00fcnt\u00fcs\u00fc, TESS\u2019in \u00f6n\u00fcm\u00fczdeki iki y\u0131l boyunca izleyece\u011fi 26 sekt\u00f6rden birini temsil ediyor. Uzay arac\u0131, her y\u0131l 27 g\u00fcn boyunca bir sekt\u00f6r\u00fc g\u00f6zlemleyecek.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;Pi Mensae c&#8221; ad\u0131 verilen &#8220;s\u00fcper-D\u00fcnya&#8221; kategorisindeki gezegenin \u00e7ap\u0131n\u0131n D\u00fcnya&#8217;n\u0131n 2,14 kat\u0131, k\u00fctlesinin ise D\u00fcnya&#8217;n\u0131n 4,82 kat\u0131 oldu\u011fu bildirildi. Pi Mensae c&#8217;nin y\u00f6r\u00fcngesindeki y\u0131ld\u0131za, G\u00fcne\u015f&#8217;e en yak\u0131n gezegen olan Merk\u00fcr&#8217;den 50 kat daha yak\u0131n oldu\u011fu tespit belirtildi. \u00d6z k\u00fctle \u00f6l\u00e7\u00fcmlerinin gezegenin b\u00fcy\u00fck \u00f6l\u00e7\u00fcde sudan olu\u015ftu\u011funa i\u015faret etti\u011fini ifade eden ABD&#8217;nin Massachusetts Teknoloji \u00dcniversitesinden (MIT) g\u00f6kbilimci [&hellip;]<\/p>\n","protected":false},"author":23,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[506],"tags":[],"class_list":["post-47676","post","type-post","status-publish","format-standard","hentry","category-astronomi"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Mensa tak\u0131my\u0131ld\u0131z\u0131n\u0131n \u00f6tesinde bir gezegen - Online Star Register<\/title>\n<meta name=\"description\" content=\"Y\u0131ld\u0131zlarla ilgili yeni bir ke\u015fif daha yap\u0131ld\u0131. 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