Carbonaceous chondrite, ntau chav kawm ntawm chondrites (ib qho ntawm ob ntu ntawm pob zeb meteorites), tseem ceeb vim qhov kev nkag siab lawv muab rau hauv keeb kwm thaum ntxov ntawm lub hnub ci. Lawv suav txog li 3 feem pua ntawm tag nrho cov meteorites sau tom qab pom tias poob rau lub ntiaj teb.
Peb kawm dab tsi los ntawm kev kawm chondrites?
Lawv tau tsim thaum ntau hom plua plav thiab cov nplej me me hauv lub Hnub Ci thaum ntxov tau lees paub los ua cov hnub qub qub. … Lawv txoj kev kawm muab cov ntsiab lus tseem ceeb rau nkag siab txog keeb kwm thiab hnub nyoog ntawm Lub Hnub Ci, kev sib txuas ntawm cov organic tebchaw, keeb kwm ntawm lub neej thiab muaj dej hauv ntiaj teb.
Vim li cas qee cov kws tshawb fawb xav tias carbonaceous chondrites tuaj yeem yog qhov tseem ceeb rau kev tsim lub neej hauv ntiaj teb?
Cov kws tshawb fawb los ntawm txoj kev tshawb fawb tau luam tawm hauv phau ntawv Journal Space Science Review tau sau tseg tias cov meteorites no tau ua "lub luag haujlwm tseem ceeb hauv lub ntiaj teb cov dej hauv ntiaj teb thaum ub" vim tias lawv tau yooj yim rau kev thauj mus los ntawm cov ntsiab lus tsis hloov pauv uas tau sau rau ntawm lub ntiaj teb. thaj tsam sab nraud ntawm lub npe hu ua protoplanetary disk …
Vim li cas ib chav meteorites hu ua carbonaceous chondrites?
pab pawg no, muaj npe tom qab Ivuna meteorite (Tanzania), muaj tshuaj muaj pes tsawg leeg uas nyob ze rau qhov ntsuas hauv hnub ci photosphere (tsuas yog cov ntsiab lus gaseous, thiab cov ntsiab lus.xws li lithium uas yog underrepresented nyob rau hauv lub hnub lub photosphere los ntawm kev sib piv rau lawv abundance nyob rau hauv CI chondrites).
carbonaceous chondrite tsim li cas?
Feem ntau cov carbonaceous chondrites tau xav tias yog los ntawm qis-albedo, C-hom asteroids, uas yog hom ntau tshaj plaws ntawm 2.7 thiab 3.4 AU (Tswb li al., 1989), CM chondrites tuaj yeem muab tau los ntawm qhov hloov pauv C-zoo li lub hnub qub hu ua G-hom (Burbine li al., 2002).
