Telescope-ka orbital TESS ayaa daah furay "Dhulka" markii ugu horeysay.

Koox cirbixiyeenno ah oo hoos tagta machadka tignoolajiyada ee Massachusetts ayaa daabacay War-saxaafadeed, taas oo ay ku dhawaaqday guulihii ugu dambeeyay ee hawlgal cusub oo lagu raadinayo meerayaasha ka baxsan nidaamka qorraxda. Transiting Exoplanet Survey Satellite (TESS) telescope orbital, bilaabay April 18, 2018, waxa uu daah-furay shayga ugu yar ee hawshiisa cilmi-baadhiseed ee gaaban - malaha meeraha dhagaxa ah ee cabbirka dhulkeenna.

Exoplanet HD 21749c waxa uu ku wareegaa xidigta HD 8 waxa uu ku wareegayaa mudo ku dhaw 21749 maalmood. HD 21749 system waxa uu inoo jiraa 53 sano oo iftiin ah. Xiddigu wuxuu hayaa qiyaastii 80% cufka cadceedda. Wareegga gaaban ee meeraha ee ku wareegsan xiddigtiisa guri waxay ka dhigan tahay in heerkulkiisu uu ka sarreyn karo 450 darajo Celsius. Fahamkeena, nolosha sida dhagax kulul oo kale waa wax aan macquul ahayn. Laakiin tani kama dhimayso guusha TESS. Farsamooyinka raadinta iyo qalabka ayaa horumarin doona, cirbixiyayaashuna waxay filayaan inay helaan daraasiin exoplanets ah oo ku yaal aag raaxo leh marka loo eego aragtida nolosha dhulka.

Waa in la sheegaa in telescope-ka orbital ee Kepler uu helay 2662 exoplanets intii lagu jiray sannadihii badnaa ee uu shaqaynayey, kuwaas oo qaar badan oo ka mid ah laga yaabo in ay le'eg yihiin dhulka. Hadafka TESS waa ka duwan yahay. Telescope-ka TESS waxa uu daraaseeyaa xiddigaha u dhow iyo, iyada oo ay weheliso qalabka dhulka ku salaysan ee Chile (Planet Finder Spectrograph, PFS), waxa uu suurtogal ka dhigayaa in la go'aamiyo tirada iyo xitaa ka kooban yahay jawiga exoplanets oo leh heer sax ah.

Muddo laba sano ah, howlgalka TESS waxa uu rajeynayaa in uu daraaseeyo in ka badan 200 oo nidaamyada xiddigaha. Saynis yahanadu waxay filayaan in tani ay caawin doonto in la ogaado in ka badan 000 exoplanets. Dayax gacmeedku wuxuu daboolaa in ka badan 50% cirka 90 maalmood gudahood. By habka, exoplanet kale ayaa laga helay HD 13,5 nidaamka - HD 21749b. Laakiin jidhkan samada ah waxa iska leh fasalka “sub-Neptune”, TESS-na waxa ay hore u heshay dhawr shay oo noocaas ah.

Source: 3dnews.ru