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The mmalite nke kpakpando - a red ibu
Red ibu na supergiant - bụ aha nke uwa ihe na ogologo shells na elu luminosity. Ha bụ ndị nke mbubreyo spektral ọmụmụ K na M. ha radii gafere anwụ na-acha ọtụtụ narị ugboro. The kacha radieshon nke kpakpando akụkọ maka red na infrared region nke ụdịdị dị iche iche. On Hertzsprung- - Russell red ibu dị n'elu isi akara usoro, ha kpam kpam ịdị ukwuu dịgasị ubé n'elu efu ma ọ bụ a na-ezighị ezi uru.
The ebe ndị dị otú a kpakpando karịa anyanwụ ebe ọ dịkarịa ala 1500 ugboro, na mgbe ya dayameta bụ banyere 40 ugboro ọzọ. Ebe ọ bụ na ihe dị iche na zuru uru anyị-enye ìhè bụ ise, ọ na-enyo na-acha ọbara ọbara buru ibu na-ewepụtarịrị a narị ugboro ọzọ ìhè. Ma ọ bụ ọtụtụ colder. Solar okpomọkụ ugboro abụọ arụmọrụ nke a red ibu, ya mere kwa unit nke n'elu ebe nke ìhè nke anyị na usoro na-ewepụtarịrị ìhè na iri na isi ugboro ọzọ.
The anya kpakpando ahụ na agba na-adabere na elu okpomọkụ. Anyị Sun na-ewe iwe ruo mgbe na-acha ọcha na nwere a dịtụ obere size, n'ihi ya, ọ na-akpọ-acha odo odo Dwarf. Oyi kpakpando ndị oroma na-acha uhie uhie ìhè. Kpakpando nke ọ bụla na usoro nke ya evolushọn nwere ike iru ikpeazụ nke spektral klas na-aghọ a red ibu abụọ nkebi nke development. Na nke a emee n'oge nucleation nzọụkwụ na kpakpando ma ọ bụ na ikpeazụ ogbo nke evolushọn. N'oge a, a red ibu amalite emit ike nke onwe ha na ndọda ike e wepụtara mgbe ọ na-squeezed.
Subgiants akpọ kpakpando ntọala nke nke kwụsịrị hydrogen anọ na Jeremaya mere, ma na-ere ọkụ nke helium bụghị ma amalitela. Na nke a emee n'ihi na kernel bụ ezughị ụtọ elu. Otu ihe atụ nke a nwere ike subgiant Arthur, emi odude ke na ìgwè kpakpando Boötis. Ọ bụ nke oroma
Yellow Dwarf anyanwụ bụ a na-eto eto kpakpando. Ya afọ na-eme atụmatụ na-4,57 ijeri afọ. Na isi usoro, ọ ka ga na-anọgide na ihe banyere 5 ijeri afọ. Ma ndị ọkà mmụta sayensị na-enwe ike simulate ụwa na nke anyanwụ - a red Rafa. Ya akụkụ ga-eto 200-anọghị n'ogige atụrụ ma ruo Earth orbit, incinerating Mercury na Venus. N'ezie, ndụ n'oge a bụ agaghịkwa ekwe omume. Mgbe a na ogbo, anyanwụ ga-adịru ihe ọzọ 100 nde afọ, mgbe nke ọ ga-aghọ a mbara Nebula , na-aghọ a na-acha ọcha Dwarf.
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