Kalli nassin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar nassin: Passage: The unusually low metallicity of Vega makes it a weak Lambda Boötis star. Duk da haka, dalilin wanzuwar irin waɗannan nau'ikan sunadarai, nau'ikan taurari na A0-F0 ba a bayyana ba. Wata dama ita ce cewa ƙwarewar sunadarai na iya zama sakamakon yaduwa ko asarar taro, kodayake samfuran taurari sun nuna cewa wannan zai faru ne kawai a ƙarshen ƙarshen rayuwar rayuwar mai ƙona hydrogen. Wata dama ita ce cewa tauraron ya samo asali ne daga matsakaiciyar gas da ƙura wanda ba shi da ƙarfe sosai. Halin da aka lura na helium zuwa hydrogen a Vega shine 0.030 ± 0.005, wanda ya kai kusan kashi 40% ƙasa da na Sun. Wannan na iya faruwa ne ta hanyar ɓacewar wani yanki na haɗarin helium kusa da farfajiyar.
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