<prompt> Bheka isigaba esingezansi bese uphendula umbuzo emva kwalokho ngolimi olufanayo nesigaba: I-Passage: Ezindabeni zezinkanyezi, lezozakhi ezinenombolo yama-athomu ephakeme kune-helium zibizwa ngokuthi izinsimbi. I-metallicity ye-photosphere kaVega ingama-32 kuphela wenqwaba yezakhi ezisindayo emkhathini weLanga. Qhathanisa lokhu, ngokwesibonelo, nobuningi bensimbi obuphindwe kathathu enkanyezini efana neSirius uma kuqhathaniswa neLanga. Ukuze kuqhathaniswe, iLanga linokuningi kwezakhi ezisindayo kune-helium ezingaba ngu-ZSol 0.0172 0.002. Ngakho, ngokuya ngobuningi, cishe u-0.54 kuphela weVega uqukethe izakhi ezinzima kune-helium. Umbuzo: Zingaki izakhi ezisindayo kune-helium eziseVega?  <response>: 0.54 