{"id":49469,"date":"2018-12-30T21:11:00","date_gmt":"2018-12-30T19:11:00","guid":{"rendered":"https:\/\/osr.org\/?p=49469\/"},"modified":"2023-07-24T14:01:10","modified_gmt":"2023-07-24T12:01:10","slug":"2018in-son-yildiz-haberleri","status":"publish","type":"post","link":"https:\/\/osr.org\/tr\/blog\/astronomi\/2018in-son-yildiz-haberleri\/","title":{"rendered":"2018\u2019in son y\u0131ld\u0131z haberleri"},"content":{"rendered":"

D\u00fcnyan\u0131n her yerinde yo\u011fun bir \u015fekilde uzay\u0131 ke\u015ffetme \u00e7al\u0131\u015fmalar\u0131 devam ederken, yeni bir ke\u015fif de \u015eili’li astronomlardan geldi. Uzun zamand\u0131r g\u00f6ky\u00fcz\u00fc inceleme \u00e7al\u0131\u015fmalar\u0131 yapan bu grup, 9 adet de\u011fi\u015fken y\u0131ld\u0131z ke\u015ffetti.<\/p>\n

Peki nedir bu de\u011fi\u015fken y\u0131ld\u0131zlar? K\u0131sa ve anla\u015f\u0131l\u0131r bir \u015fekilde ifade etmek gerekirse; de\u011fi\u015fken y\u0131ld\u0131zlar, parlakl\u0131klar\u0131 zaman i\u00e7erisinde de\u011fi\u015fen y\u0131ld\u0131zlard\u0131r. Bu de\u011fi\u015fiklik gen\u00e7 ya\u015flarda ger\u00e7ekle\u015febildi\u011fi gibi, y\u0131ld\u0131zlar \u00e7ok ya\u015fl\u0131 iken de ger\u00e7ekle\u015febilir. Yeni ke\u015ffedilen bu dokuz y\u0131ld\u0131z\u0131n alt\u0131 tanesi, ikili \u00e7iftler halinde olan y\u0131ld\u0131zlar olarak tan\u0131mlan\u0131rken; bir tanesi tek ba\u015f\u0131na dola\u015fan, di\u011fer y\u0131ld\u0131zlara g\u00f6re daha parlak ve mavi olan Phoenicis y\u0131ld\u0131z\u0131 olarak tan\u0131mland\u0131. Di\u011fer iki y\u0131ld\u0131z ise hen\u00fcz s\u0131n\u0131fland\u0131r\u0131lamad\u0131.<\/p>\n

Yeni ke\u015fifler<\/span><\/h2>\n

Bu yeni ke\u015fif, astronomlar i\u00e7in olduk\u00e7a \u00f6nemli \u00e7\u00fcnk\u00fc bilim insanlar\u0131na y\u0131ld\u0131zlar\u0131n yap\u0131sal durumlar\u0131 ve evrimle\u015fme s\u00fcreci hakk\u0131nda ipu\u00e7ular\u0131 verebilir. Ayn\u0131 zamanda, evrendeki uzakl\u0131k kavram\u0131n\u0131 da daha iyi anlamaya yard\u0131mc\u0131 olabilir. Asl\u0131nda astronominin bu dal\u0131, belki de en pop\u00fcler ve en eski bran\u015flar aras\u0131nda yer al\u0131yor. Fakat yeni ke\u015fifler yaparken, uzun vadeli \u00e7al\u0131\u015fmalar ve hatas\u0131z veriler toplanmas\u0131 gerekiyor.<\/p>\n

Bu kadar b\u00fcy\u00fck hacimli verilerin toplanmas\u0131 ve i\u015flenmesi s\u0131ras\u0131nda da zaman zaman sistematik aksakl\u0131klar meydana gelebiliyor. Yeni y\u0131ld\u0131zlar\u0131n ke\u015ffi ile y\u0131ld\u0131zlar aras\u0131 mesafelerin \u00f6l\u00e7\u00fcm\u00fcnde ya\u015fanm\u0131\u015f olabilecek hatalar hakk\u0131nda da fikir edinilmesi umuluyor.<\/p>\n

Bir kuyruklu y\u0131ld\u0131z haberi daha<\/span><\/h2>\n

S\u0131ra d\u0131\u015f\u0131 bir kuyruklu y\u0131ld\u0131z olan 46P\/Wirtanen, bu hafta sonu gezegenimizin g\u00f6ky\u00fcz\u00fc manzaras\u0131n\u0131n bir par\u00e7as\u0131 olacak. Son 70 y\u0131l\u0131n en yak\u0131n mesafesinden ge\u00e7ecek kuyruklu y\u0131ld\u0131z\u0131 olan bu g\u00f6k cismini g\u00f6rmek i\u00e7in teleskop gerekmeyecek.<\/p>\n

Kuyruklu y\u0131ld\u0131z\u0131 ke\u015ffeden astronom Carl Wirtanen\u2019in ad\u0131n\u0131 alan 46P\/Wirtanen kuyruklu y\u0131ld\u0131z\u0131, yakla\u015f\u0131k olarak 1 km \u00e7apa sahip ve G\u00fcne\u015f\u2019in etraf\u0131ndaki bir turunu 5.4 y\u0131lda tamaml\u0131yor. Olduk\u00e7a h\u0131zl\u0131 olan bu g\u00f6k cismi, k\u0131sa periyotlu kuyruklu y\u0131ld\u0131zlar aras\u0131nda yer al\u0131yor. (Bir kuyruklu y\u0131ld\u0131z\u0131n uzun periyotlu kabul edilmesi i\u00e7in bir turunun 200 y\u0131l\u0131 a\u015fmas\u0131 gerekiyor.) Hiperaktif olarak tan\u0131mlanan 46P\/Wirtanen kuyruklu y\u0131ld\u0131z\u0131, kendi boyutundaki di\u011fer g\u00f6k cisimlerinden daha fazla par\u00e7ac\u0131k yay\u0131yor. Bu da onu daha parlak bir hale getiriyor.<\/p>\n

Ge\u00e7en ay, D\u00fcnya’ya sadece iki \u0131\u015f\u0131k dakikas\u0131 mesafeden ge\u00e7en kuyruklu y\u0131ld\u0131z, g\u00f6kteki en parlak kuyruklu y\u0131ld\u0131z olmu\u015ftu. A\u015fa\u011f\u0131daki foto\u011fraf\u0131n merkezinde yer alan parlak cisim, 46P\/Wirtanen kuyruklu y\u0131ld\u0131z\u0131n\u0131n kendisi.<\/p>\n

D\u00fcnya\u2019ya daha da yakla\u015fan kuyruklu y\u0131ld\u0131z\u0131, uygun ko\u015fullar alt\u0131nda \u00e7\u0131plak g\u00f6zle g\u00f6rmek m\u00fcmk\u00fcn. Birka\u00e7 hafta boyunca g\u00f6ky\u00fcz\u00fcnde kalacak olan kuyruklu y\u0131ld\u0131z\u0131 g\u00f6zlemlemek i\u00e7in \u015fartlar da gayet uygun g\u00f6z\u00fck\u00fcyor.<\/p>\n

NASA, kuyruklu y\u0131ld\u0131z\u0131n g\u00f6zlemlenmesi i\u00e7in bir kampanya ba\u015flat\u0131rken Maryland \u00dcniversitesi hem profesyonel hem de amat\u00f6r astronomlar\u0131 bu cismi izlemeye davet ediyor. NASA\u2019n\u0131n \u00e7e\u015fitli rasathaneleri de bu etkinliklere kat\u0131lacak. Bilim insanlar\u0131n\u0131n amac\u0131, g\u00f6k cismini inceleyerek daha detayl\u0131 veriler elde etmek.<\/p>\n","protected":false},"excerpt":{"rendered":"

D\u00fcnyan\u0131n her yerinde yo\u011fun bir \u015fekilde uzay\u0131 ke\u015ffetme \u00e7al\u0131\u015fmalar\u0131 devam ederken, yeni bir ke\u015fif de \u015eili’li astronomlardan geldi. Uzun zamand\u0131r g\u00f6ky\u00fcz\u00fc inceleme \u00e7al\u0131\u015fmalar\u0131 yapan bu grup, 9 adet de\u011fi\u015fken y\u0131ld\u0131z ke\u015ffetti. Peki nedir bu de\u011fi\u015fken y\u0131ld\u0131zlar? K\u0131sa ve anla\u015f\u0131l\u0131r bir \u015fekilde ifade etmek gerekirse; de\u011fi\u015fken y\u0131ld\u0131zlar, parlakl\u0131klar\u0131 zaman i\u00e7erisinde de\u011fi\u015fen y\u0131ld\u0131zlard\u0131r. Bu de\u011fi\u015fiklik gen\u00e7 ya\u015flarda […]<\/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-49469","post","type-post","status-publish","format-standard","hentry","category-astronomi"],"acf":[],"yoast_head":"\n2018\u2019in son y\u0131ld\u0131z haberleri - Online Star Register<\/title>\n<meta name=\"description\" content=\"2018 biterken y\u0131ld\u0131zlar ne durumda\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/osr.org\/tr\/blog\/astronomi\/2018in-son-yildiz-haberleri\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2018\u2019in son y\u0131ld\u0131z haberleri - Online Star Register\" \/>\n<meta property=\"og:description\" content=\"2018 biterken y\u0131ld\u0131zlar ne durumda\" \/>\n<meta property=\"og:url\" content=\"https:\/\/osr.org\/tr\/blog\/astronomi\/2018in-son-yildiz-haberleri\/\" \/>\n<meta property=\"og:site_name\" content=\"Online Star Register\" \/>\n<meta property=\"article:published_time\" content=\"2018-12-30T19:11:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-07-24T12:01:10+00:00\" \/>\n<meta name=\"author\" content=\"Hatice Utkan Ozden\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Hatice Utkan Ozden\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\n\t \"@context\": \"https:\/\/schema.org\",\n\t \"@graph\": [\n\t {\n\t \"@type\": \"WebPage\",\n\t \"@id\": \"https:\/\/osr.org\/tr\/blog\/astronomi\/2018in-son-yildiz-haberleri\/\",\n\t \"url\": \"https:\/\/osr.org\/tr\/blog\/astronomi\/2018in-son-yildiz-haberleri\/\",\n\t \"name\": \"2018\u2019in son y\u0131ld\u0131z haberleri - Online Star Register\",\n\t \"isPartOf\": {\n\t \"@id\": \"https:\/\/osr.org\/tr\/#website\"\n\t },\n\t \"datePublished\": \"2018-12-30T19:11:00+00:00\",\n\t \"dateModified\": \"2023-07-24T12:01:10+00:00\",\n\t \"author\": {\n\t \"@id\": \"https:\/\/osr.org\/tr\/#\/schema\/person\/ef86e8c767dff5d728379a636d34a85a\"\n\t },\n\t \"description\": \"2018 biterken y\u0131ld\u0131zlar ne durumda\",\n\t \"breadcrumb\": {\n\t \"@id\": \"https:\/\/osr.org\/tr\/blog\/astronomi\/2018in-son-yildiz-haberleri\/#breadcrumb\"\n\t },\n\t \"inLanguage\": \"tr\",\n\t \"potentialAction\": [\n\t {\n\t \"@type\": \"ReadAction\",\n\t \"target\": [\n\t \"https:\/\/osr.org\/tr\/blog\/astronomi\/2018in-son-yildiz-haberleri\/\"\n\t ]\n\t }\n\t ]\n\t },\n\t {\n\t \"@type\": \"BreadcrumbList\",\n\t \"@id\": \"https:\/\/osr.org\/tr\/blog\/astronomi\/2018in-son-yildiz-haberleri\/#breadcrumb\",\n\t \"itemListElement\": [\n\t {\n\t \"@type\": \"ListItem\",\n\t \"position\": 1,\n\t \"name\": \"Home\",\n\t \"item\": \"https:\/\/osr.org\/tr\/\"\n\t },\n\t {\n\t \"@type\": \"ListItem\",\n\t \"position\": 2,\n\t \"name\": \"Astronomi\",\n\t \"item\": \"https:\/\/osr.org\/tr\/astronomi\/\"\n\t },\n\t {\n\t \"@type\": \"ListItem\",\n\t \"position\": 3,\n\t \"name\": \"2018\u2019in son y\u0131ld\u0131z haberleri\"\n\t }\n\t ]\n\t },\n\t {\n\t \"@type\": \"WebSite\",\n\t \"@id\": \"https:\/\/osr.org\/tr\/#website\",\n\t \"url\": \"https:\/\/osr.org\/tr\/\",\n\t \"name\": \"Online Star Register\",\n\t \"description\": \"\",\n\t \"potentialAction\": [\n\t {\n\t \"@type\": \"SearchAction\",\n\t \"target\": {\n\t \"@type\": \"EntryPoint\",\n\t \"urlTemplate\": \"https:\/\/osr.org\/tr\/?s={search_term_string}\"\n\t },\n\t \"query-input\": {\n\t \"@type\": \"PropertyValueSpecification\",\n\t \"valueRequired\": true,\n\t \"valueName\": \"search_term_string\"\n\t }\n\t }\n\t ],\n\t \"inLanguage\": \"tr\"\n\t },\n\t {\n\t \"@type\": \"Person\",\n\t \"@id\": \"https:\/\/osr.org\/tr\/#\/schema\/person\/ef86e8c767dff5d728379a636d34a85a\",\n\t \"name\": \"Hatice Utkan Ozden\",\n\t \"description\": \"Hatice Utkan \u00d6zden is a writer and a journalist. 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