Lub hauv paus ntawm galaxies kiag li tsis muaj qhov teeb meem tsaus ntuj tau qhia

Cov txheej txheem:

Lub hauv paus ntawm galaxies kiag li tsis muaj qhov teeb meem tsaus ntuj tau qhia
Lub hauv paus ntawm galaxies kiag li tsis muaj qhov teeb meem tsaus ntuj tau qhia
Anonim

Cov kws tshawb fawb tau pom tias tsis ntev los no tau pom "super-tawg galaxies", yuav luag tsis muaj qhov teeb meem tsaus ntuj, yog lub hnub qub ntawm galaxies loj dua nrog lub hnub qub tsis ntev. Qhov no tau tshaj tawm rau hnub Monday los ntawm kev tshaj xov xwm ntawm Massachusetts Institute of Technology (MIT), hais txog kab lus hauv phau ntawv xov xwm Nature Astronomy.

"Peb pom tias cov galaxies no tig mus rau hauv qhov chaw zoo ib yam li cov hnub qub txav mus los nyob ib ncig ntawm lub hnub. tig thaum lub ntiaj teb tag nrho muaj nyob, "hais tias Laura Muag, tus pab xibfwb ntawm University of California ntawm Riverside (Tebchaws Asmeskas), hais los ntawm MIT xovxwm pabcuam.

Ob xyoos dhau los, cov kws saib hnub qub los ntawm Asmeskas tau pom tias ib zaug ob lub hnub qub nyob hauv lub hnub qub ntawm Coma, NGC1052-DF2 thiab NGC1052-DF4, ib txwm tsis muaj qhov yuav luag tsis muaj teeb meem. Hais txog lawv qhov loj me, ob qho tib si ntawm cov khoom no tsis qis dua Milky Way, tab sis lawv qhov hnyav tau dhau los ua ntau qhov kev txiav txim ntawm qhov ntau dua. Vim yog qhov teeb meem tsis tshua muaj neeg tsawg heev, cov kws tshawb fawb pib hu lawv tias "super-tawg galaxies" (UDG).

Tom qab ntawd, Suav cov kws tshawb fawb hnub qub tau tshawb pom ob lub kaum ob yam khoom zoo sib xws, uas yuam cov kws tshawb fawb nrhiav kev piav qhia rau lawv lub neej. Cov kws tshawb fawb tau txaus siab tshwj xeeb hauv qhov tseeb tias yuav luag txhua "super-tawg galaxies" nyob sab nraum cov pawg loj, qhov kev sib cuam tshuam gravitational, hauv kev xav, tuaj yeem ua rau lawv yuav luag tag nrho cov peev txheej ntawm qhov tsaus ntuj.

Sayles thiab nws cov npoj yaig tau pom cov lus piav qhia rau qhov kev coj txawv txawv ntawm "super-tawg galaxies" thiab tseem qhia txog keeb kwm ntawm lawv kev tsim thaum pom ob yam khoom zoo sib xws, DGSAT I thiab S82-DG-1. Cov galaxies no nyob hauv lub hnub qub Pisces thiab Cetus, thiab tib lub sijhawm lawv raug tshem tawm ntawm Lub Ntiaj Teb ntawm qhov luv luv, ob peb kaum lab lab lub xyoo.

Galaxies thiab comets

Cov kws saib hnub qub tau pom tias ob qho tib si ntawm cov khoom no muaj ib qho tshwj xeeb uas txawv lawv los ntawm lwm qhov "super -tawg galaxies" - lawv yog cov qub hnub qub thiab cov ntsaum liab. Qhov kev tshawb pom no tau los ua qhov xav tsis thoob rau cov kws tshawb fawb, raws li nws qhia tias kev tsim cov hnub qub tshiab hauv DGSAT I thiab S82-DG-1 yuav luag tag li yav dhau los.

Raws li cov kws tshawb fawb astronomers piav qhia, cov hnub qub tsis tshwm rau hauv galaxies ntsiag to thaum lawv cov neeg nyob ze loj dua ua rau lawv yuav luag txhua qhov txias hydrogen thiab hmoov av khaws cia xav tau los tsim cov hnub qub tshiab. Nyob rau hauv rooj plaub ntawm "super-tawg galaxies" qhov no tau txiav txim siab ua tsis tau, vim tias lawv nyob ntawm qhov deb ntawm txhua lwm yam khoom.

Sayles thiab nws cov npoj yaig tau sim piav qhia qhov tsis xws luag no siv lub tshuab computer kom ntxaws uas piav qhia txog kev tsim thiab kev hloov pauv ntawm cov "galaxies tawg tawg" no, nrog rau txhua qhov puag ncig ntawm qhov chaw. Cov kev suav no tau npaj txhij txog tias DGSAT I thiab S82-DG-1 yog lub hnub qub ntawm lwm lub galaxies.

Nyob rau yav dhau los nyob deb, ob qho ntawm cov khoom no tau mus txog ntawm galaxies loj, vim qhov ntawd lawv tau poob tag nrho cov peev txheej ntawm cov teeb meem tsaus ntuj thiab raug pov rau hauv qhov chaw ntev heev, zoo ib yam li cov hnub qub hauv ntiaj teb. Ntau txhiab xyoo tom qab, lawv pom lawv tus kheej hauv qhov chaw qhib sib cuam tshuam, uas ua rau pom tias DGSAT I thiab S82-DG-1 tau pib ntawm nws thaj chaw, thiab tsis nyob hauv pawg tuab ntawm galaxies.

Kev suav ntawm Sayles thiab nws cov npoj yaig qhia tias tsis muaj qhov xav tau ntau ntawm cov khoom zoo li no yuav tsum tau zais hauv qhov khoob ntawm txhua pawg loj ntawm galaxies. Lawv qhov kev tshawb pom thiab kawm, raws li cov kws tshawb fawb hnub qub vam tias, yuav tsis tsuas yog lees paub lawv txoj kev xav, tab sis tseem tso cai rau lawv nthuav qhia keeb kwm ntawm kev hloov pauv ntawm qhov pom ntawm "super-tawg galaxies."

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