Zvinhu zvinonzi "metallicity" muVega's photosphere inenge 32% chete yezvinhu zvinorema zviri muzuva. (Enzanisa izvi, semuenzaniso, kune katatu kuwanda kwezvinhu zvinorema mu Sirius yakafanana nenyeredzi zvichienzaniswa nezuva.) Kuenzanisa, zuva rine huwandu hwezvinhu zvinorema kupfuura helium yeZSol = 0.0172 ± 0.002. Saka, maererano nehuwandu, ingangoita 0.54% yeVega inoumbwa nezvinhu zvinorema kupfuura helium. Mubvunzo: Chii chinonzi zvinhu zvine nhamba yepamusoro yeatomu kupfuura helium?
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