Video: Vim li cas feem ntau galaxies kauv?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Astronomers ntseeg li ntawd cov galaxies muaj kauv arm vim cov galaxies rotate - los yog tig ib ncig ntawm lub hauv paus axis - thiab vim yog ib yam dab tsi hu ua "nthwv dej ceev." A kauv galaxy rotation, los yog spin, khoov cov nthwv dej rau hauv kauv . Cov hnub qub dhau los ntawm nthwv dej thaum lawv orbit galaxy chaw.
Ib yam li ntawd, nws tau nug, puas yog feem ntau galaxies kauv?
Kauv galaxies ua roughly 72 feem pua cov galaxies uas cov kws tshawb fawb tau pom, raws li kev tshawb fawb 2010 Hubble Space Telescope. Feem ntau cov kauv galaxies muaj lub hauv paus bulge puag ncig los ntawm lub tiaj tus, rotating disk ntawm hnub qub.
Ib sab saum toj, ua li cas kauv galaxies khaws lawv cov duab? Yuav ua li cas galaxies xws li M33 thiab peb Milky Way khaws lawv cov kauv zoo li qub ? Astronomers qee zaum hu qhov no "qhov teeb meem cua" ntawm lub kauv caj npab. Nws tau raug pom tias sab hauv ntawm cov galaxies rotate sai dua qhov chaw sab nraud. Lub tswv yim yog tias tag nrho disk ntawm ib galaxy yog sau nrog cov khoom.
Ib sab saum toj no, vim li cas kauv galaxies feem ntau tshwm sim?
Kev tshawb fawb tshiab pom tias kauv caj npab yog tus kheej-perpetuating, pheej, thiab xav tsis thoob nyob ntev. Kauv galaxies ua roughly 77 feem pua ntawm cov cov galaxies uas cov kws tshawb fawb tau pom. Vim elliptical cov galaxies yog ua los ntawm cov laus, dimmer hnub qub, lawv yog ntau nyuaj rau qhov chaw.
Dab tsi yam ntxwv piav qhia txog kauv galaxies?
Kauv Galaxies Lub disk yog ib cheeb tsam ntawm lub hnub qub tsim thiab muaj ntau yam roj thiab hmoov av. Nws yog dominated los ntawm cov hluas, xiav Population kuv hnub qub. Lub hauv paus bulge yog tsis muaj roj thiab hmoov av.
Pom zoo:
Dab tsi yog qhov txawv ntawm kauv galaxies thiab barred kauv galaxies?
Dab tsi yog qhov txawv ntawm ib lub galaxy barred kauv thiab lub elliptical galaxy? Ib qho kauv tsis pub muaj ob los yog ntau dua kauv caj npab nyob rau hauv ib lub tiaj tiaj, qhov twg caj npab txuas nrog ib lub hnub qub. Lub bar thiab kauv caj npab yog cov cheeb tsam ntawm lub hnub qub tsim. Qhov nruab nrab ntawm lub bar feem ntau yog ib tug kheej kheej bulge
Puas muaj ntau dua kauv lossis elliptical galaxies?
Astronomers tau txheeb xyuas ntau cov kauv galaxies dua li cov ellipticals, tab sis qhov no tsuas yog vim cov spirals yooj yim dua rau pom. Kauv galaxies yog hotbeds ntawm lub hnub qub tsim, tab sis elliptical galaxies tsis ze li qhov muaj txiaj ntsig vim tias lawv muaj roj tsawg thiab hmoov av, uas txhais tau tias tsawg dua tshiab (thiab ci dua) hnub qub tau yug los
Vim li cas cov kab mob feem ntau tsim cov xeeb ntxwv ntau dua li muaj sia nyob?
Cov kab mob tsim cov xeeb ntxwv ntau dua li qhov muaj sia nyob. Cov kab mob tuaj yeem tuag los ntawm ntau yam ua rau: kab mob, kev tshaib plab, thiab noj, thiab lwm yam. Ib puag ncig tsis tuaj yeem txhawb nqa txhua yam kabmob uas yug los. Ntau tus tuag ua ntej lawv muaj peev xwm rov tsim dua
Yuav ua li cas muab kauv galaxies tsim?
Astronomers ntseeg hais tias ib tug galaxy tus kauv qauv pib raws li ib tug ceev yoj emanating los ntawm lub galactic chaw. Lub tswv yim yog tias tag nrho cov disk ntawm lub galaxy yog ntim nrog cov khoom. Raws li qhov ceev nthwv dej hla dhau, nws tau xav tias yuav ua rau tawg ntawm lub hnub qub tsim
Qhov twg ntawm cov ntsiab lus hauv qab no feem ntau pom nyob rau hauv feem ntau cov chiv?
Cov tshuaj chiv niaj hnub suav nrog ib lossis ntau tshaj ntawm peb lub ntsiab lus tseem ceeb tshaj plaws hauv cov zaub mov noj: nitrogen, phosphorus, thiab potassium. Qhov tseem ceeb thib ob yog cov ntsiab lus sulfur, magnesium, thiab calcium