Nau'o'in Galaxies daban-daban a Duniya: Bincike Mai Zurfi
Sararin samaniya wani babban faffadan sarari ne mai ban sha'awa, yana ɗauke da sirrika da abubuwan al'ajabi marasa adadi. Daga cikin waɗannan, taurarin taurari sun fito fili a matsayin wasu daga cikin halittun sama mafi ban sha'awa, kowannensu tarin taurari, iskar gas, ƙura, da duhu ne da aka haɗa su da ƙarfin nauyi. Taurarin taurari ba su da tsari ɗaya; suna zuwa cikin siffofi, girma dabam-dabam, da tsari, kowannensu yana da halaye na musamman. A cikin wannan labarin, za mu zurfafa cikin nau'ikan taurarin taurari daban-daban a cikin sararin samaniya, muna bincika samuwarsu, fasaloli, da mahimmancinsu a cikin nazarin ilmin taurari.
1. Galaxies na Karkace-karkace
Taurarin taurari masu karkace wataƙila sune mafi shahara kuma ana iya gane su a cikin taurarin, waɗanda aka siffanta su da hannayensu masu karkace waɗanda ke kewaye da wani babban ƙwanƙwasa na tsakiya. An rarraba waɗannan taurarin zuwa manyan nau'i biyu: karkace na yau da kullun da karkace masu katanga.
Ganyayyaki na yau da kullun (Sa, Sb, Sc):
– Sa Galaxies: Waɗannan suna da hannuwa masu rauni da kuma babban kumburi a tsakiya.
– Sb Galaxies: Waɗannan suna da hannayen da suka yi rauni sosai kuma suna da ɗan kumburi kaɗan.
– Sc Galaxies: Waɗannan suna nuna hannaye masu rauni sosai da kuma ƙaramin kumburi.
Milky Way, wato tauraron da muke ciki, misali ne na wani tauraron da ke karkace, wanda aka ware musamman a matsayin nau'in Sb.
Galaxies Masu Juyawa (SBa, SBb, SBc):
– SBa Galaxies: Waɗannan suna da dogon tsari mai kyau, wanda ya fito daga tsakiyar ƙumburin, tare da hannuwa masu rauni sosai.
– SBb Galaxies: Suna da irin wannan sandar, waɗannan suna da hannayen da suka fi rauni.
– SBc Galaxies: Waɗannan suna da sand mai kyau tare da hannayen da suka ji rauni sosai.
Ana kyautata zaton tsarin sandar yana sauƙaƙa kwararar iskar gas zuwa tsakiya, wanda hakan ke iya ƙara samar da taurari da kuma haɓakar ɓullar wani babban rami ko ramin baƙi. Misalin tauraron da aka toshe shi ne sanannen tauraron Andromeda (M31).
2. Galaxies masu siffar elliptical
Taurarin taurari masu siffar elliptical sun sha bamban da takwarorinsu masu siffar spiral. Suna da siffar ellipsoidal tare da haske mai santsi, wanda ba shi da siffofi kuma ba su da hannun da ya bambanta da taurari masu siffar spiral. Ana rarraba taurari masu siffar elliptical bisa ga tsawonsu, tun daga E0 (kusan zagaye) zuwa E7 (mai tsayi sosai).
Halayen Taurarin Elliptical:
– Suna kama daga ƙananan ƙananan ellipticals zuwa manyan ellipticals masu girma.
– Yawanci, suna ɗauke da tsoffin taurari ja kuma suna da ƙarancin yawan samuwar taurari.
– Rashin iskar gas da ƙura yana nufin ba su da kayan da ake buƙata don samar da sabbin taurari.
– Sau da yawa ana samun waɗannan taurarin a cikin tarin taurari kuma suna iya zama sakamakon haɗakar taurari.
Misalin tauraron dan adam mai siffar elliptical shine M87, wani babban tauraron dan adam mai siffar elliptical a cikin Virgo Cluster, wanda aka sani da gina wani babban ramin baki a tsakiyarsa.
3. Galaxies na Lenticular
Taurarin Lenticular (S0) suna tsaka-tsaki tsakanin taurarin elliptical da spiral. Suna da bulge na tsakiya da tsarin diski mai kama da faifai amma ba su da manyan hannaye masu karkace da ake samu a cikin taurarin karkace. Sau da yawa ana ɗaukar su a matsayin nau'in canjin taurari.
Siffofin Galaxies na Lenticular:
– Suna da wani ɓangare na faifai kamar taurari masu karkace amma babu wani yanki mai mahimmanci da ke samar da taurari.
– Yawanci suna nuna tarin tsoffin taurari, kamar taurarin elliptical.
- Wasu taurarin lenticular suna ɗauke da iskar gas da ƙura amma ba su isa su ci gaba da samar da taurari masu yawa ba.
– Sau da yawa ana samun su a cikin tarin taurari, wanda ke nuna cewa hulɗa da haɗe-haɗe suna taka rawa a cikin samuwarsu.
Galaxiyar NGC 5866, wacce aka fi sani da Spindle Galaxy, misali ne na galaxiyar lenticular.
4. Galaxies marasa tsari
Taurarin taurari marasa tsari suna bayyana rarrabuwar taurari masu karkace, masu siffar elliptical, ko kuma masu launin lenticular saboda yanayinsu mai rikitarwa da rashin tabbas. Sau da yawa suna da wadataccen iskar gas da ƙura, tare da yankunan da ke da tsananin samuwar taurari.
Nau'ikan Galaxies marasa tsari:
– Nau'i na I (Irr I): Waɗannan taurarin suna nuna wasu siffofi kamar tsari ko kuma ɓangare na faifai.
– Nau'i na II (Irr II): Waɗannan ba su da wani tsari mai ma'ana kuma suna kama da marasa tsari gaba ɗaya.
Taurarin taurari marasa tsari galibi suna ƙanƙanta kuma ba su da girma fiye da sauran nau'ikan taurari. Suna iya zama sakamakon hulɗar nauyi, haɗewa, ko karo na baya na taurari waɗanda suka kawo cikas ga tsarinsu.
Manyan da Ƙananan Girgije na Magellanic, tauraron ɗan adam na Milky Way, misalai ne na taurari marasa tsari. Waɗannan taurarin an san su da yankunan da suke samar da taurari masu ƙarfi.
5. Galaxies na Musamman
Taurari masu ban mamaki suna nuna siffofi ko siffofi marasa ban mamaki waɗanda ba su dace da rarrabuwar siffofi na yau da kullun ba. Waɗannan halaye na iya faruwa ne sakamakon hulɗa da wasu taurari, karkacewar nauyi, ko hanyoyin ciki na musamman.
Misalan Taurarin Gajimare Masu Ban Mamaki:
– Taurarin Haɗuwa: Waɗannan suna nuna alamun hulɗar nauyi, kamar wutsiyoyin ruwa, gadoji, ko warps. Misali shine Taurarin Antennae (NGC 4038/NGC 4039), waɗanda ke cikin tsarin haɗuwa.
– Nuclei Mai Aiki na Galactic (AGN): Galaxies masu ƙarfi sosai a tsakiya, galibi suna da manyan ramukan baƙi. Misali shine Centaurus A, wanda ke da tsakiya mai haske da aiki kuma kuma tauraron elliptical ne.
Kammalawa
Galaxies su ne ginshiƙan gina duniyarmu, kowanne nau'i yana ba da gudummawa ga tarin tsarin sararin samaniya mai yawa. Daga kyawawan karkace masu hannayensu masu girma, ta hanyar manyan siffofi masu kama da juna, zuwa ga taurari marasa daidaituwa da kuma abubuwan ban mamaki, kowanne nau'i yana ba da fahimta ta musamman game da hanyoyin da ke tafiyar da sararin samaniya. Fahimtar waɗannan taurarin taurari daban-daban ba wai kawai yana sanar da mu game da samuwar da juyin halittar sararin samaniya ba, har ma yana sanya hanyar Milky Way ɗinmu a cikin mahallin sararin samaniya mai faɗi. Yayin da fasahar lurarmu ke ci gaba, gano sirrika masu yawa na waɗannan mazaunan taurari zai ci gaba da zama babban bincike a fannin ilmin taurari da ke ci gaba da faɗaɗawa.
