“Ya\u015fanabilir b\u00f6lgedeki gezegen, hayat\u0131 koruyup destekleyebilecek atmosfere sahip olabilir” <\/strong>dedi.<\/p>\nSistemin en i\u00e7indeki gezegen, Ven\u00fcs’\u00fcn yaln\u0131zca yar\u0131s\u0131 kadar bir k\u00fctleye sahip. Kelam konusu d\u00fcnyay\u0131 tespit etmek i\u00e7in kullan\u0131lan dikey s\u00fcrat prosed\u00fcr\u00fc isabetliyse, bu gezegen \u015fimdiye kadar \u00f6l\u00e7\u00fclen en hafif \u00f6tegezegen olacak.<\/p>\n
Bu usul, y\u0131ld\u0131zlar\u0131n gezegenleri yer\u00e7ekimiyle y\u00f6r\u00fcngelerine \u00e7ekti\u011finde \u00e7ok hafif de olsa yalpalad\u0131\u011f\u0131 ger\u00e7e\u011fine dayan\u0131yor. G\u00f6kbilimciler, \u0131\u015f\u0131\u011f\u0131 farkl\u0131 dalga uzunluklar\u0131na b\u00f6len hassas spektrograflar kullanarak, bir y\u0131ld\u0131z\u0131n renk tayf\u0131n\u0131n mavi ucuna m\u0131 yoksa k\u0131rm\u0131z\u0131 ucuna m\u0131 kayd\u0131\u011f\u0131n\u0131 tespit edebiliyor.<\/p>\n
\u015eayet kaymalar tertipli bi\u00e7imde tekrarlan\u0131yorsa, kelam konusu g\u00f6k cismi muhtemelen bir y\u0131ld\u0131z\u0131n y\u00f6r\u00fcngesinde d\u00f6n\u00fcyordur. Bu yolla k\u00fctleyi ay\u0131rt etmek g\u00fc\u00e7 olsa bile, gezegen oldu\u011fundan \u015f\u00fcphelenilen cisimle y\u0131ld\u0131z\u0131n yalpalamas\u0131 ortas\u0131nda yanl\u0131\u015fs\u0131z orant\u0131l\u0131 bir m\u00fcnasebet olabilir.<\/p>\n
Zapatero Osorio, “ESPRESSO’nun (Avrupa Uzay Ajans\u0131’n\u0131n ‘\u00c7ok B\u00fcy\u00fck Teleskopu’nun \u00fczerindeki Kayal\u0131k \u00d6tegezegenler ve Kararl\u0131 Spektroskopik M\u00fc\u015fahedeler i\u00e7in E\u015fel Spektrograf) sa\u011flad\u0131\u011f\u0131 mutlakl\u0131k ve kararl\u0131l\u0131k olmasayd\u0131, bu \u00f6l\u00e7\u00fcm m\u00fcmk\u00fcn olmazd\u0131” <\/strong>dedi.<\/p>\nBu, G\u00fcne\u015f Sistemi’nin \u00f6tesindeki en k\u00fc\u00e7\u00fck gezegenlerin k\u00fctlelerini \u00f6l\u00e7me kabiliyetimizde ileriye at\u0131lan bir ad\u0131m.<\/p>\n
Kelam konusu y\u0131ld\u0131z\u0131n etraf\u0131nda d\u00f6nen gezegenler yaln\u0131zca bu \u00fc\u00e7\u00fcnden ibaret olmayabilir. Daha evvel tespit edilmemi\u015f “gizli”<\/strong> \u00f6tegezegenler bulan grup, sistemde 4’\u00fcnc\u00fc bir d\u00fcnya daha ke\u015ffetti ve su i\u00e7erebilecek 5’inci bir d\u00fcnyan\u0131n varl\u0131\u011f\u0131ndan da \u015f\u00fcpheleniyor. Ayr\u0131yeten bu gezegenlerin y\u0131ld\u0131za s\u0131cak kalmaya k\u00e2fi yak\u0131nl\u0131kta olmas\u0131 da beklenen.<\/p>\nG\u00f6kbilimciler L 98-59’un \u00fc\u00e7 gezegenini birinci defa 2019’da, NASA’n\u0131n Ge\u00e7i\u015f Halindeki \u00d6te Gezegen Ara\u015ft\u0131rma Uydusu’nu (TESS) kullanarak, gezegenler y\u0131ld\u0131zlar\u0131n \u00f6n\u00fcnden ge\u00e7ti\u011finde y\u0131ld\u0131zdan gelen \u0131\u015f\u0131kta ya\u015fanan azalmay\u0131 tespit ederek bulmu\u015ftu. \u00d6te yandan, birinci \u00fc\u00e7\u00fc d\u0131\u015f\u0131ndaki gezegenler lakin ESPRESSO’dan al\u0131nan dikeyh\u0131z bilgilerinin de eklenmesiyle ke\u015ffedilebildi. Ayr\u0131yeten birinci \u00fc\u00e7 gezegenin k\u00fctlelerinin ve yar\u0131\u00e7aplar\u0131n\u0131n \u00f6l\u00e7\u00fclmesi de ESPRESSO bilgileri sayesinde m\u00fcmk\u00fcn oldu. Bu da gezegenleri olu\u015fturan bile\u015fenlere dair bir i\u00e7g\u00f6r\u00fc kazand\u0131rabili<\/p>\n
Portekiz’deki Porto \u00dcniversitesinden Olivier Demangeon, “Bu sistemin ya\u015fanabilir b\u00f6lgesinde bir kayasal gezegenin varl\u0131\u011f\u0131na dair ipu\u00e7lar\u0131na sahibiz”<\/strong> dedi.<\/p>\nBu sistem, b\u00fcy\u00fck bir \u015feyin habercisi. Biz, toplum olarak, astronominin do\u011fu\u015fundan beri kayasal gezegenlerin pe\u015findeyiz. Art\u0131k nihayetinde, y\u0131ld\u0131z\u0131n\u0131n ya\u015fanabilir b\u00f6lgesinde, atmosferini inceleyebilece\u011fimiz bir karasal gezegen tespitine giderek daha da yakla\u015f\u0131yoruz.<\/p>\n
KAYNAK:
INDEPENDENT T\u00dcRK\u00c7E<\/span><\/div>\nHaber7<\/span><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
D\u00fcnya’dan yaln\u0131zca 35 \u0131\u015f\u0131k y\u0131l\u0131 uzaktaki L 98-59 isimli y\u0131ld\u0131z\u0131n y\u00f6r\u00fcngesindeki gezegenlerin i\u00e7inde yahut atmosferlerinde su mevcut olabilir …<\/p>\n","protected":false},"author":1,"featured_media":249957,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[120,11233,11234,819],"class_list":["post-249956","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-teknoloji","tag-dunya","tag-gezegen","tag-ote","tag-tespit"],"yoast_head":"\n
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