<prompt> Bheka isigaba esingezansi bese uphendula umbuzo emva kwalokho ngolimi olufanayo nesigaba: I-Passage: I-Vega ine-spectral class engu-A0V, okwenza ibe inkanyezi emhlophe enombala oluhlaza okwesibhakabhaka ehlanganisa i-hydrogen ne-helium enkabeni yayo. Njengoba izinkanyezi ezinkulu kakhulu zisebenzisa uphethiloli wazo wokubumbana ngokushesha kunezinkanyezi ezincane, isikhathi sokuphila sikaVega kulandelana okuyinhloko cishe siyiminyaka eyizigidi eziyinkulungwane, okuyingxenye eyodwa kweziyishumi yesikhathi sokuphila kweLanga. Le nkanyezi manje ineminyaka engaba yizigidi ezingu-455 ubudala, noma cishe ingxenye yokuphila kwayo okulindelekile. Ngemva kokushiya ukulandelana okuyinhloko, iVega iyoba i - red giant yesigaba - M futhi ilahlekelwe ingxenye enkulu yesisindo sayo, ekugcineni ibe i - white dwarf. Okwamanje, iVega inesisindo esingaphezu kokuphindwe kabili kwelanga futhi ukukhanya kwayo okuyi-bolometric kucishe kube izikhathi ezingu - 40 ukwedlula kwelanga. Ngenxa yokuthi lizungeza ngokushesha futhi libonakala liseduze nenkabazwe, ukukhanya kwalo okubonakalayo, okubalwe kucatshangwa ukuthi kunokukhanya okufanayo kuyo yonke indawo, kungokuphindwe izikhathi ezingaba ngu-57 kweLanga. Uma iVega iguquguquka, khona-ke ingaba uhlobo lweDelta Scuti enesikhathi esiyizinsuku ezingaba ngu-0.107. Iningi lamandla akhiqizwa emnyameni weVega akhiqizwa umjikelezo wekhabhoninitrogenoxygen umjikelezo we-CNO, inqubo yokuhlanganiswa kwe-nuclear ehlanganisa ama-proton ukwakha i-helium nuclei ngokusebenzisa ama-nucleus aphakathi kwekhabhoni, i-nitrogen, ne-oxygen. Le nqubo idinga izinga lokushisa elingu-15 million K, eliphakeme kunezinga lokushisa eliphakathi kweLanga, kodwa elingasebenzi kahle kunendlela yokuhlangana kwe-proton-proton chain reaction. Umjikelezo we-CNO uzwela kakhulu izinga lokushisa, okuholela endaweni yokudlulisa indawo ezungeze umnyombo ohlukanisa ngokulinganayo umlotha ovela ekuphenduleni kokuhlanganiswa ngaphakathi kwesifunda somnyombo. Umkhathi ongaphezulu usesimweni sokulinganisela kwemisebe. Lokhu kuphambene neLanga, elinendawo yemisebe egxile enkabeni kanye nendawo yokudlulisa ngaphezulu. Ukugeleza kwamandla okuvela eVega kuye kwalinganiswa ngokunembile ngokumelene nemithombo ejwayelekile yokukhanya. Ku-5480 Å, i-flux ingu-3650 Jy nge-margin yephutha engu-2. I-spectrum ebonakalayo ye-Vega ibuswa imigqa yokumunca i-hydrogen; ikakhulukazi uchungechunge lwe-hydrogen Balmer nge-electron ku-n 2 inombolo eyinhloko ye-quantum. Imigqa yezinye izakhi... Umbuzo: Uyoba yini uVega esikhathini esizayo?  <response>: isidudla esimhlophe 