A Possible Mechanism for the Metallicity of the First Generation Star
We propose that the absence of the metal zero star, the first generation star (FGS), may be explained by the mechanism for metallicity enrichment of a star in the Galaxy based on the host Galaxy’s disk-star interactions. The mechanism involves an accreting of interstellar medium (ISM). The zero metal star may accrete a small amount of metal rich material of the ISM and polluted the star’s composition. We suggest here that the expected degree of the polluted relative average metallicity[Fe/H]of a star may be[Fe] ~ —4.5.
KeywordsGalactic chemical evolution solar neighborhood G-dwarf supernova
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