Le Ukudaleka iinkwenkwezi - ingxilimbela ebomvu

ezinkulu Red kunye supergiant - ligama bezinto isithuba kunye oonokrwece ezongeziweyo yaye iqaqambile eliphezulu. Baya kuba iiklasi ecacicleyo ekupheleni K kunye M. radii lwabo ngaphezu amakhulu enelanga ngamaxesha. Yemisebe liphezulu iinkwenkwezi ebangela kummandla obomvu infrared spectrum. On Hertzsprung- - Russell isigebenga ebomvu ibekwe ngaphezu ulandelelwano iphambili umgca, zabo ngokupheleleyo ubukhulu ziyohluka kancinane ngasentla zero okanye engenaxabiso.

Ummandla inkwenkwezi bengaphezulu indawo ilanga ubuncinane 1500 amaxesha, yaye lo gama ubudeki balo lumalunga amaxesha 40 ngaphezulu. Ekubeni umahluko ixabiso elililo ukuya isikhanyiso wethu malunga ezintlanu, kuvela ukuba ngxilimbela ebomvu ikhala izihlandlo ezilikhulu ngaphezulu ukukhanya. Kodwa yena esibandayo kakhulu. lobushushu Solar kabini ukusebenza ingxilimbela ebomvu, kwaye ke ngoko iyunithi kobuso ukukhanya yenkqubo yethu nganye nekhupha ukukhanya ngamaxesha elinesithandathu ngaphezulu.

umbala Le nkwenkwezi ebonakalayo ixhomekeke iqondo lobushushu le. Sun wethu itshiswe de emhlophe kwaye ubungakanani elincinane kakhulu, ngoko ibizwa ngokuba yingqakumbana emthubi. iinkwenkwezi olubandayo ukukhanya-orenji kunye ebomvu. inkwenkwezi nganye kwinkqubo yophuhliso wayo ukufikelela wokugqibela iiklasi ecacicleyo ube ingxilimbela ebomvu ngokwamanqanaba amabini yophuhliso. Oku kwenzeka ngexesha nucleation inyathelo ukuya inkwenkwezi okanye kwinqanaba lokugqibela zazivelela. Ngeli xesha, ingxilimbela ebomvu uqala ukuba kukhutshwe amandla amandla abo omxhuzulane wakhululwa xa oluphumayo.

Njengoko lenkwenkwezi leyo zixinaniswe, ukunyuka yayo ubushushu. Ngelo xesha, ngenxa ekuhleni ubungakanani kumphezulu, maxa wambi uwa iqaqambile. Yena uyafa. Ukuba le yi "abaselula" isigebenga ebomvu, iya kuphelela ezibilinini zakhe ukuqala indlela yenyukliya Yindibanisela helium hydrogen. Emva koko, le nkwenkwezi abaza kugqiba ulandelelwano engundoqo. Le nkwenkwezi endala neembila zithutha ngenye indlela. Kumanqanaba kamva izinto zazivelela hydrogen kwizibane langaphakathi kuphelelwa ngokupheleleyo. Emva apho inkwenkwezi ushiya ngokulandelelana engundoqo. Ngokutsho പ്രൊസീജിയര് indlela - Russell, wafudukela supergiants kunye iingxilimbela ebomvu. Kodwa ngaphambi kokuqhubeka kweli nqanaba, udlula linyathelo eliphakathi - subgiant.

Subgiants ebizwa iinkwenkwezi ngaphakathi kwinucleus leyo unqamkile reactions hydrogen fusion, kodwa ukutshiswa helium sele alikafiki iqalile. Oku kwenzeka ngenxa yokuba i kernel ayikho seliphantse ukugqitha ngokwaneleyo. Umzekelo oku subgiant Arthur, ibekwe kule umlaza Boötis. Yena we-orenji YONKE nge kubonakale ubukhulu -0.1. Kubhaliwe sise kude ukusuka iLanga malunga 36 - 38 iminyaka elula. Wati kungaba somhlaba saseNtla ngoMeyi, ukuba ukhangela ngqo ezantsi. Arthur ububanzi izihlandlo 40 elanga.

Ilanga elimthubi ezincinanana yinkwenkwezi eselula. iminyaka yayo Kuqikelelwa ukuba kwiminyaka 4,57 billion ubudala. Ngolandelelwano engundoqo, kuba iya kuhlala malunga 5 billion kwiminyaka. Kodwa ke oosonzululwazi baye bakwazi ukuba zilinganisa ihlabathi apho elangeni - ingxilimbela ebomvu. imilinganiso yalo iya kukhula emhlambini-200 waza wafikelela Earth orbit, otshisayo Mercury kunye Venus. Kakade ke, ubomi ngeli xesha akusekho kunokwenzeka. Kweli nqanaba, ilanga liya kuhlala malunga eminye iminyaka eli-100 million, emva koko iya kuba nebula langa , yaye uba nenomlanga emhlophe.