<prompt> I-Vega inezinhlayiya ze-athomu eziphakeme kune-helium ezibizwa ngokuthi izinsimbi. I-metallicity ye-photosphere ye-Vega ingama-32 kuphela wenqwaba yezinto ezisindayo emkhathini weLanga. Qhathanisa lokhu, ngokwesibonelo, ngobuningi be-metallicity obuphindwe kathathu enkanyezini efanayo uSirius uma kuqhathaniswa neLanga. Ukuqhathanisa, iLanga linokuningi kwezinto ezisindayo kune-helium cishe ZSol 0.0172 0.002. Ngakho-ke, ngokuya ngobuningi, cishe u-0.54 weVega uqukethe izinto ezisindayo kune-helium. Umbuzo: Yini igama lezinto ezinenombolo ye-athomu ephakeme kune-helium?  <response>: izinsimbi 