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- W2168168278 abstract "Abstract Extremely metal-poor (EMP) stars are thought to be formed in the low-mass protogalaxies as building blocks of the Milky Way and can be probes to investigate the early stage of galaxy formation and star formation in the early universe. We study the formation history of EMP stars in the Milky Way halo using a new model of chemical evolution based on the hierarchical theory of the galaxy formation. We construct the merging history of the Milky Way halo based on the extended Press-Schechter formalism, and follow the star formation and chemical evolution along the merger tree. The abundance trends and number of low-mass stars predicted in our model are compared with those of observed EMP stars. Additionally, in order to clarify the origin of hyper metal poor stars, we investigate the change of the surface metal abundances of stars by accretion of interstellar matter. We also investigate the pre-enrichment of intergalactic matter by the first supernovae." @default.
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- W2168168278 date "2008-06-01" @default.
- W2168168278 modified "2023-09-24" @default.
- W2168168278 title "Galactic archeology with extremely metal-poor stars" @default.
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- W2168168278 doi "https://doi.org/10.1017/s1743921308025027" @default.
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