ALMA\u2019y\u0131, Atacama B\u00fcy\u00fck Milimetre \/ milimetre-alt\u0131 dizgesi olarak tan\u0131yoruz. Olduk\u00e7a dikkat \u00e7ekici ba\u015far\u0131lara imza atan bu teleskop, yeni bir ba\u015far\u0131ya daha imzas\u0131n\u0131 att\u0131.<\/p>\n
S\u00fcpernovalar\u0131 y\u0131ld\u0131zlar\u0131n ya\u015famlar\u0131na \u015fiddetli bir patlama ile son vermeleri sonucu olu\u015fur. Patlayan y\u0131ld\u0131z\u0131n d\u0131\u015f kabu\u011fu uzaya yay\u0131l\u0131r ve d\u0131\u015f uzay\u0131 a\u011f\u0131r elementler bak\u0131m\u0131ndan yeni y\u0131ld\u0131zlar\u0131n olu\u015fmas\u0131 i\u00e7in zenginle\u015ftirir. ALMA, ilk kez hen\u00fcz yeni patlam\u0131\u015f bir s\u00fcpernovan\u0131n kal\u0131nt\u0131lar\u0131n\u0131 inceledi. Tozlarla dolu bir kal\u0131nt\u0131, g\u00f6kadalar hakk\u0131nda \u00f6nemli bir sorunun cevab\u0131n\u0131 bizlere sunabilir. E\u011fer ki, bu toz kal\u0131nt\u0131lara y\u0131ld\u0131zlar aras\u0131 ortama yeterli miktarda ge\u00e7i\u015f yap\u0131yor ise \u00e7o\u011fu g\u00f6kadan\u0131n tozlu ve karanl\u0131k yap\u0131s\u0131 a\u00e7\u0131klanabilecek.<\/p>\n
G\u00f6kadalar k\u00fctle\u00e7ekim kuvveti ile birbirine ba\u011flanm\u0131\u015f temel olarak y\u0131ld\u0131zlar aras\u0131 madde, gaz ve toz par\u00e7ac\u0131klar\u0131, plazma ve karanl\u0131k maddeden olu\u015fan kozmik sistemlerdir. Evrende olduk\u00e7a toz bar\u0131nd\u0131ran g\u00f6kadalara rastlanmaktad\u0131r. ALMA\u2019n\u0131n yapt\u0131\u011f\u0131 ke\u015fif do\u011frultusunda g\u00f6kbilimciler bu tozlar\u0131n kayna\u011f\u0131n\u0131n \u00f6zellikle evrenin erken d\u00f6nemlerinde olu\u015fan s\u00fcpernova patlamalar\u0131 oldu\u011funu d\u00fc\u015f\u00fcn\u00fcyor.<\/p>\n
Charlottesville, \u201cG\u00f6rece yak\u0131n ve gen\u00e7 bir s\u00fcpernova kal\u0131nt\u0131s\u0131n\u0131n tam ortas\u0131nda toplanm\u0131\u015f \u00e7ok miktarda toz k\u00fctlesi bulduk\u201d diyor. ABD\u2019de bulunan Ulusal Radyo G\u00f6kbilim G\u00f6zlemevi (NRAO) ve Virginia \u00dcniversitesi\u2019nde \u00e7al\u0131\u015fan g\u00f6kbilimci Remy Indebetouw ise, \u201c\u0130lk kez tozun olu\u015ftu\u011fu yeri g\u00f6r\u00fcnt\u00fclemeyi ba\u015fard\u0131k, bu, g\u00f6kadalar\u0131n evrimini anlamak i\u00e7in olduk\u00e7a \u00f6nemli.\u201d diyor.<\/p>\n
G\u00f6zlemlenen bu s\u00fcpernova kal\u0131nt\u0131s\u0131 Astronomi kataloglar\u0131nda SN 1987A B\u00fcy\u00fck Macellan Bulutu\u2019nda bulunuyor. Uluslararas\u0131 bir G\u00f6kbilim ekibi bizden 160.000 \u0131\u015f\u0131k y\u0131l\u0131 uzakl\u0131ktaki bu kal\u0131nt\u0131y\u0131 g\u00f6zlememek i\u00e7in ALMA\u2019y\u0131 kulland\u0131.<\/p>\n
Patlamadan sonra sa\u00e7\u0131lan gazlar\u0131n so\u011fudu\u011funu, b\u00fcy\u00fck miktarda tozun ise S\u00fcpernova kal\u0131nt\u0131s\u0131n\u0131n so\u011fuk merkezi b\u00f6lgesinde, oksijen, karbon ve silikon par\u00e7ac\u0131klar\u0131 olarak bir araya geldi\u011fini d\u00fc\u015f\u00fcn\u00fcyor. Patlamadan 500 g\u00fcn sonra yap\u0131lan g\u00f6zlemlerde ise, kal\u0131nt\u0131 i\u00e7erisinde \u00e7ok az miktarda s\u0131cak toz par\u00e7as\u0131 ke\u015ffedildi. Y\u0131ld\u0131z\u0131n patlamas\u0131ndan sonra ortaya \u00e7\u0131kan kal\u0131nt\u0131n\u0131n G\u00fcne\u015f\u2019in k\u00fctlesinin d\u00f6rtte biri kadar yeni olu\u015fmu\u015f toz i\u00e7erdi\u011fini tahmin ediyor.<\/p>\n
\u201cSN 1987A \u00f6zel bir yer, \u00e7\u00fcnk\u00fc hen\u00fcz \u00e7evresindeki ortamla kar\u0131\u015fmad\u0131, bu y\u00fczden g\u00f6rd\u00fc\u011f\u00fcm\u00fcz \u015feyler orada \u00fcretilen \u015feyler. Kendi t\u00fcr\u00fcnde bir ilk olan yeni ALMA sonu\u00e7lar\u0131, basit\u00e7e birka\u00e7 on y\u0131l \u00f6ncesine kadar var olmayan maddeyle dolup ta\u015fan bir s\u00fcpernova kal\u0131nt\u0131s\u0131n\u0131 g\u00f6zler \u00f6n\u00fcne seriyor.\u201d diyor Indebetouw.<\/p>\n
Yap\u0131lan bu ke\u015fif g\u00f6kadalar\u0131n evriminde \u00e7ok \u00f6nemli bir rol oynuyor. Patlama sonras\u0131 olu\u015fan tozdan yar\u0131s\u0131 ya da \u00fc\u00e7te biri y\u0131ld\u0131zlararas\u0131 ortama ge\u00e7i\u015f yapabilirse, evrenin erken d\u00f6nemlerinde tespit edilen verimli tozlar\u0131n sorumlusu ortaya \u00e7\u0131km\u0131\u015f oluyor.<\/p>\n","protected":false},"excerpt":{"rendered":"
ALMA\u2019y\u0131, Atacama B\u00fcy\u00fck Milimetre \/ milimetre-alt\u0131 dizgesi olarak tan\u0131yoruz. Olduk\u00e7a dikkat \u00e7ekici ba\u015far\u0131lara imza atan bu teleskop, yeni bir ba\u015far\u0131ya daha imzas\u0131n\u0131 att\u0131. S\u00fcpernovalar\u0131 y\u0131ld\u0131zlar\u0131n ya\u015famlar\u0131na \u015fiddetli bir patlama ile son vermeleri sonucu olu\u015fur. Patlayan y\u0131ld\u0131z\u0131n d\u0131\u015f kabu\u011fu uzaya yay\u0131l\u0131r ve d\u0131\u015f uzay\u0131 a\u011f\u0131r elementler bak\u0131m\u0131ndan yeni y\u0131ld\u0131zlar\u0131n olu\u015fmas\u0131 i\u00e7in zenginle\u015ftirir. ALMA, ilk kez hen\u00fcz […]<\/p>\n","protected":false},"author":754,"featured_media":23428,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[157,30,19,26],"tags":[248,1161,392],"class_list":["post-23424","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-120-sayi","category-astronomi","category-bilim-gundemi","category-fizik","tag-astronomi","tag-kutlecekim","tag-uzay"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t