Astronomlar h\u00e2l\u00e2 Pl\u00fcto\u2019nun gezegenlik stat\u00fcs\u00fcn\u00fc tart\u0131\u015fadursun, biliminsanlar\u0131 son on y\u0131lda i\u00e7erisinde Haumea, Makemake ve Eris\u2019in de bulundu\u011fu c\u00fcce gezegenleri ke\u015ffetmeye devam ediyorlar. En son ke\u015ffedilen c\u00fcce gezegen aday\u0131 takma ad\u0131 \u201cDistant Dwarf (uzak c\u00fcce)\u201d tan\u0131m\u0131n\u0131n k\u0131saltmas\u0131ndan esinlenilen DeeDee, yani 2014 UZ224, c\u00fcce gezegen potansiyelini ta\u015f\u0131yan ke\u015ffedilmi\u015f en son cisim.<\/p>\n
Space.com\u2019dan Mike Wall\u2019un haberine g\u00f6re, astronomlar DeeDee\u2019yi ilk kez 2014\u2019te \u015eili\u2019de blunan Blanco Telekobu\u2019nu kullanarak\u00a0 g\u00f6rd\u00fcler. Yap\u0131lan g\u00f6zlemler biliminsanlar\u0131na bu uzak gezegenle ilgili geni\u015f \u00e7apta bilgi verdi. \u00d6rne\u011fin, cismin G\u00fcne\u015f\u2019in etraf\u0131nda eliptik y\u00f6r\u00fcngesinde tam bir tur atabilmesi i\u00e7in gereken s\u00fcrenin 1100 D\u00fcnya y\u0131l\u0131 oldu\u011funu, G\u00fcne\u015f\u2019e en fazla 38 AB kadar yak\u0131nla\u015fabilece\u011fini (AB, astronomi birimi, G\u00fcne\u015f ve D\u00fcnya aras\u0131nda mesafeyi tan\u0131mlar; 1 AB= 150 milyon kilometredir) ve en fazla 180 AB kadar uzakla\u015fabilece\u011fini ke\u015ffettiler. G\u00f6kcismi \u015fu s\u0131ralar G\u00fcne\u015f\u2019e 92 AB kadar uzakl\u0131kta. Biliminsanlar\u0131 yak\u0131n zamanda The Astrophysical Journal Letter<\/em>\u2019da DeeDee\u2019yi ayr\u0131nt\u0131l\u0131 bir \u015fekilde anlatan bir makale yay\u0131mlad\u0131lar.<\/p>\n Blanco g\u00f6zlemleri, ara\u015ft\u0131r\u0131lmasyla ilgili biliminsanlar\u0131na b\u00fcy\u00fck bir kap\u0131 aralam\u0131\u015f olsa da, DeeDee\u2019nin tam anlamda ne b\u00fcy\u00fckl\u00fc\u011f\u00fcyle ilgili ne de onu c\u00fcce gezegen olarak s\u0131n\u0131fland\u0131rmam\u0131zda \u00f6nemli bir kriter olan k\u00fcresellik hakk\u0131nda net bir bilgi veriyor. Bu nedenle ara\u015ft\u0131rmac\u0131lar so\u011fuk nesnelerin uzayda yayd\u0131\u011f\u0131 s\u0131cakl\u0131\u011f\u0131n\u0131 \u00f6l\u00e7ebilen Atacama B\u00fcy\u00fck Milimetre\/Milimetrealt\u0131 Dizisi\u2019ni (k\u0131saca ALMA) bu nesneye do\u011fru y\u00f6nlendirdiler.<\/p>\n Al\u0131nan verilere g\u00f6re DeeDee 635 km \u00e7ap\u0131nda, ki bu b\u00fcy\u00fckl\u00fck asteroid ku\u015fa\u011f\u0131nda bulunan Ceres\u2019in \u00fc\u00e7te ikisi kadar bir b\u00fcy\u00fckl\u00fc\u011fe sahip oldu\u011funa i\u015faret. Bu b\u00fcy\u00fckl\u00fck ayr\u0131ca DeeDee\u2019nin k\u00fcresel bir \u015fekle sahip olabilmesi i\u00e7in gerekli k\u00fctle kriterini sa\u011flad\u0131\u011f\u0131, yani c\u00fcce gezegen olarak s\u0131n\u0131fland\u0131r\u0131labilece\u011fi anlam\u0131n\u0131 ta\u015f\u0131yor. Yine de biliminsanlar\u0131ndan hen\u00fcz resmi olarak bu \u015fekilde s\u0131n\u0131fland\u0131r\u0131laca\u011f\u0131na dair bir a\u00e7\u0131klama yap\u0131lm\u0131\u015f de\u011fil.<\/p>\n Michigan \u00dcniversitesi\u2019nde ara\u015ft\u0131rmac\u0131 ve \u00e7al\u0131\u015fman\u0131n y\u00fcr\u00fct\u00fcc\u00fcs\u00fc olan David Gerdes, DeeDee\u2019nin Nept\u00fcn \u00f6tesinde, uzayda saklanan ke\u015ffedilmemi\u015f tek c\u00fcce gezgen olamayaca\u011f\u0131n\u0131 ve orada bir yerlerde ke\u015ffedilmeyi bekleyen belki de binlercesinin oldu\u011funu belirtiyor.<\/p>\n Gerdes ke\u015fifle ilgili olarak yap\u0131lan bas\u0131n a\u00e7\u0131klamas\u0131nda, \u201cPl\u00fcto\u2019nun \u00f6tesinde bulunan b\u00f6lge gezegen benzeri cisimler a\u00e7\u0131s\u0131ndan \u015fa\u015f\u0131rt\u0131c\u0131 bir \u015fekilde zengin bir b\u00f6lge. Baz\u0131lar\u0131 ger\u00e7ekten \u00e7ok \u00e7ok k\u00fc\u00e7\u00fck, ama baz\u0131lar\u0131 ise ger\u00e7ekten Pl\u00fcto ile yar\u0131\u015fabilecek b\u00fcy\u00fckl\u00fckte. B\u00f6ylesi objeler o kadar uzakta ve s\u00f6n\u00fckler ki, \u00e7al\u0131\u015fmay\u0131 b\u0131rak\u0131n, tespit edebilmek bile ger\u00e7ekten \u00e7ok ama \u00e7ok zor. Ancak ALMA, bu \u00e7ok uzak d\u00fcnyalara dair heyecan verici ayr\u0131nt\u0131lar\u0131 anlayabilmemize olanak sa\u011flayan inan\u0131lmaz \u00f6zelliklere sahip\u201d diye belirtiyor.<\/p>\n Yine de c\u00fcce gezegenler G\u00fcne\u015f Sistemi\u2019nde saklanan tek g\u00f6kcisimleri de\u011fil. Baz\u0131 biliminsanlar\u0131 Gezegen 9 unvan\u0131na sahip olan ba\u015fka bir gezegenin G\u00fcne\u015f Sistemi\u2019nin derinlerinde bir yerlerde gizlendi\u011fine dair ku\u015fku i\u00e7erisindeler. Yani DeeDee bir c\u00fcce gezegen olsun ya da olmas\u0131n, h\u00e2l\u00e2 G\u00fcne\u015f Sistemi\u2019mizde ke\u015ffedilmeyi bekleyen bir s\u00fcr\u00fc gezegen oldu\u011fu su g\u00f6t\u00fcrmez bir ger\u00e7ek.<\/p>\n","protected":false},"excerpt":{"rendered":" Astronomlar h\u00e2l\u00e2 Pl\u00fcto\u2019nun gezegenlik stat\u00fcs\u00fcn\u00fc tart\u0131\u015fadursun, biliminsanlar\u0131 son on y\u0131lda i\u00e7erisinde Haumea, Makemake ve Eris\u2019in de bulundu\u011fu c\u00fcce gezegenleri ke\u015ffetmeye devam ediyorlar. En son ke\u015ffedilen c\u00fcce gezegen aday\u0131 takma ad\u0131 \u201cDistant Dwarf (uzak c\u00fcce)\u201d tan\u0131m\u0131n\u0131n k\u0131saltmas\u0131ndan esinlenilen DeeDee, yani 2014 UZ224, c\u00fcce gezegen potansiyelini ta\u015f\u0131yan ke\u015ffedilmi\u015f en son cisim. Space.com\u2019dan Mike Wall\u2019un haberine g\u00f6re, astronomlar […]<\/p>\n","protected":false},"author":812,"featured_media":12709,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[516,30,19],"tags":[247,293,297],"class_list":["post-10118","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-159-sayi","category-astronomi","category-bilim-gundemi","tag-astrofizik","tag-gezegenler","tag-gunes-sistemi"],"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