Puas muaj ntau dua kauv lossis elliptical galaxies?
Puas muaj ntau dua kauv lossis elliptical galaxies?
Anonim

Astronomers tau txheeb xyuas ntau kauv galaxies dua li ellipticals, tab sis qhov ntawd tsuas yog vim qhov kauv yooj yim rau pom. Kauv galaxies yog hotbeds ntawm lub hnub qub tsim, tab sis elliptical galaxies tsis yog ze li qhov muaj txiaj ntsig vim tias lawv muaj roj tsawg thiab hmoov av, uas txhais tau hais tias tsawg dua tshiab (thiab ci dua) hnub qub yug.

Tsis tas li ntawd, pes tsawg feem pua ntawm galaxies yog elliptical?

Milky Way, lub galaxy uas peb lub hnub ci nyob, yog Sb-hom kauv galaxy. Kev kwv yees 20 feem pua ntawm cov galaxies paub tias muaj ib daim ntawv lenticular, 15 feem pua yog elliptical thiab tsuas yog hais txog 5 feem pua yog irregular.

Tsis tas li ntawd, qhov twg elliptical galaxies feem ntau yuav pom? Elliptical galaxies yog nyiam pom hauv galaxy pawg thiab nyob rau hauv compact pawg ntawm cov galaxies . Tsis zoo li ca kauv cov galaxies nrog lub koom haum thiab cov qauv, elliptical galaxies yog ntau peb-dimensional, tsis muaj ntau tus qauv, thiab lawv cov hnub qub nyob rau hauv me ntsis random orbits nyob ib ncig ntawm qhov chaw.

Tsis tas li ntawd, vim li cas elliptical galaxies feem ntau tshwm sim?

Ib tug ntawm feem ntau hom yog elliptical galaxies , npe vim lawv muaj lub cev ellipsoidal (los yog qe) zoo li, thiab ib tug du, yuav luag featureless tsos. Lawv yog cov tshwm sim ntawm ntau kev sib tsoo ntawm me me cov galaxies , thiab tag nrho cov kev sib tsoo no tau rhuav tshem cov qauv me me uas peb pom hauv peb tus kheej galaxy.

Puas yog peb lub galaxy kauv elliptical lossis tsis xwm yeem?

Ib tug kauv galaxy muaj ib spinning, flattened disk nrog caj npab uas tig ceev heev. Ib elliptical galaxy yog tus feem ntau hom galaxy , muaj ib roundish zoo, thiab qhia me me los yog tsis muaj hnub qub tsim. Ib irregular galaxy yog galaxy tsis muaj cov duab uas muaj cov hnub qub hluas heev.

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