Babban Magellanic Cloud wani galaxy ne da ke kusa da ake tunaninsa ba bisa ka'ida ba har sai da masana ilmin taurari suka yi duba da kyau. Zai iya zama karkace. Babban gajimare na Magellanic da dwarf galaxy, Magellanic Cloud, ana iya gani kawai a sararin samaniyar kudancin duniya. Hanyar Milky Way kullum tana cinye iskar gas da ke gudana daga gajimaren Magellanic ta hanyar Magudanar ruwa. A ƙarshe waɗannan ƙananan taurari biyu na iya yin karo da Milky Way.
A cikin wannan labarin za mu gaya muku duk abin da kuke buƙatar sani game da Babban Magellanic Cloud, halayensa, asalinsa da ƙari.
Babban fasali
Babban halayen Magellanic Cloud sune kamar haka:
- Ana iya ganin ta daga kudancin kogin kuma shine galaxy na biyu mafi kusa da gajimaren Magellanic.
- Yana ɗaya daga cikin taurarin dwarf goma sha ɗaya da ke kewaya namu Milky Way da Ana ɗaukarsa a matsayin galaxy mara daidaituwa.
- Ya ƙunshi jajayen duwatsu, taurari, gajimare masu tauraro, da yanki mai haske na samuwar bayyanar da aka sani da Tarantula Nebula.
- Mafi kyawun supernova na zamani, SN1987A, ya fashe a cikin gajimaren Magellanic.
- Yana da tsawo na kusan shekaru 30.000 haske.
- An yi imani da cewa ita ce mafi girman taurarin tauraron dan adam na Milky Way.
- Fitaccen kullin ja a ƙasa an san shi da Tarantula Nebula, yanki mai tauraro a cikin Babban Gajimare na Magellanic.
- Yana da nau'in katsewar sanda- karkace.
- Yana da diamita na mita 14.000 da nisa na 163.000.
- Tana da taurari kusan biliyan 30.
Babban abin da ke cikin Cloud Magellanic shi ne tsarinsa gaba daya, wanda aka bayyana shi a matsayin dwarf galaxy, wanda ke nufin cewa yana karya tarkace kamar sauran taurarin taurarin da ba su da siffofi na elliptical ko karkace. Siffar ta ya sa masana kimiyya sun haɗa shi a cikin jerin taurari masu siffofi na musamman marasa tsari.
Ya kamata a lura cewa ba duk taurarin da ke wanzuwa a sararin samaniya suna ɗauke da sifar gaba ɗaya ba, kamar ellipse. Duk da yake yawancin taurari suna da tsarin karkace, wasu taurari, galibi ana kiransu dwarf galaxies, sukan yi. sun ƙunshi takamaiman siffofi waɗanda nan da nan suna siffanta su a matsayin taurari marasa daidaituwa.
Gano Gajimaren Magellanic
Kasancewar an gano tauraron dan adam Sagittarius elliptical galaxy daga baya ya sa masana kimiyya suka yi bincike a inda yake a sararin samaniya. Sakamakon ya kasance abin mamaki, gano cewa wannan da Magellanic Clouds suna da alaƙa da alaƙa.
A nisa na kimanin shekaru 75.000 haske. Sagittarius galaxy da Magellanic Cloud suna da nisa. Rugujewar da sojojin da igiyar ruwa ke haifarwa ta hanyar mu'amalarsu da Milky Way na haifar da gurbatattun wasu illolin da ke sanya taurarin biyu ke mu'amala ta wasu magudanan ruwa.
Waɗannan rafukan sun ƙunshi hydrogen na tsaka tsaki, wanda ke haifar da tasirin hulɗar tsakanin taurarin biyu, galibi suna haifar da yanayin da a ƙarshe ke lalata abubuwan waje waɗanda ke daidai da fayafai na galactic.
Dukansu Magellanic Clouds da Saturn Galaxy suna da halaye na musamman kuma na ban mamaki, dangane da girmansu da tsarinsu, yana bayyana abubuwa biyu da suka bambanta su da waɗannan sassa guda biyu, taro da tsari, da waɗanda suka zo daga samfurin Milky Way.
Wasu tarihin
Matsayi na musamman na Babban Magellanic Cloud, daidai a cikin shugabanci na Kudancin Pole na Ecliptic, yana nufin cewa ba za a iya ganin shi a kowane lokaci daga latitudes na Rum ba, don haka ya kasance ba a sani ba a zamanin gargajiya.
An fara ambaton babban gajimare na Magellanic a cikin Littafin Taurari wanda masanin falaki na Farisa Abd Al-Rahman Al Sufi ya rubuta kusan shekara ta 964. Ana kiransa Al Bakr, Farin Bijimin da ke Kudancin Arabiya, domin ana iya ganin babban gajimare na Magellanic daga Kudancin Larabawa.
Amerigo Vespucci ya rubuta abin lura a cikin wata wasiƙa akan tafiya ta uku a 1503-1504. A lokacin da ya ke kewaya duniya, Ferdinand Magellan ne ya fara sanar da yammacin duniya wanzuwar taurarin da ke dauke da sunansa a yau. Wanda ya fara nazarin Babban Magellanic Cloud daki-daki shine John Herschel., wanda ya zauna a Cape Town tsakanin 1834 zuwa 1838, yana nazarin abubuwa daban-daban guda 278 da ke cikinsa.
An yi la'akari da Babban Magellanic Cloud a matsayin galaxy mafi kusa da Milky Way har sai da aka gano Sagittarius Dwarf Elliptical Galaxy a 1994. Tare da gano Canis Major dwarf galaxy a 2003, lakabin galaxy mafi kusa ya fadi zuwa karshen. .
Ilimin ilmin halitta da abubuwa na Magellanic Cloud
A cewar NASA's Extragalactic Object Database, Babban Magellanic Cloud an rarraba shi da SB(s)m, wani shinge mai karkatacciya (SB) galaxy wanda ba shi da tsarin zobe (s) marar tsari kuma babu kumburi (m). Bayyanar galaxy mara daidaituwa yana iya zama sakamakon mu'amala tare da Milky Way da Karamin Gajimaren Magellanic.
An daɗe ana tunanin cewa Magellanic Cloud Cloud Cloud , kamar karkatacciyar galaxy, kuma ana iya ɗauka yana nesa da mu. Koyaya, a cikin 1986, Caldwell da Coulson sun gano cewa masu canjin Cepheid a arewa maso gabas na babban yankin girgije sun fi kusanci da Milky Way fiye da canjin Cepheid a yankin kudu maso yamma. Kwanan nan, an tabbatar da wannan juzu'i mai karkatar da shi ta hanyar lura da masu canji na Cepheid da jajayen kattai a lokacin haɗakar helium. Waɗannan ayyukan sun nuna cewa karkatar da LMC ya kai 35º, la'akari da cewa 0º yayi daidai da jirgin sama mai tsayin daka zuwa galaxy ɗin mu.
Babban Cloud Magellanic ya ƙunshi taurari kusan biliyan 10.000 kuma yana da kusan shekarun haske 35.000. Yawanta ya kai kusan sau biliyan 10 na rana da kashi ɗaya bisa goma na Milky Way. Kamar yawancin taurarin da ba a saba ba, babban gajimare yana da wadata da iskar gas da ƙura kuma a halin yanzu yana cikin lokacin ƙirƙirar tauraro. Nazarin dabam-dabam sun gano kusan gungu 60 na duniya (kusan rabin girman Milky Way), 400 nebulae planetary nebulae, da gungun taurarin buɗe ido guda 700 a cikin babban gajimare na Magellanic, da kuma dubban ɗaruruwan ƙattai da manyan taurari.
Ina fatan cewa tare da wannan bayanin zaku iya ƙarin koyo game da Magellanic Cloud da halayensa.