Abundance analyses of subdwarfs of the remote halo

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Abundance, Dwarf Stars, Galactic Structure, Stellar Spectra, Stellar Spectrophotometry, Halos, Infrared Spectra, Milky Way Galaxy, Stellar Structure, Stellar Temperature, Visible Spectrum

Scientific paper

We report abundance analyses results for three stars whose velocities in the galactic rest frame exceed 400 km s-1. We have found the following [Fe/H] results: CD 29°2277 (-1.63); HD 134439 (-1.57); G64-12 (-3.52). is the most metal-deficient star analyzed to date. We have also obtained other elemental abundances, including [Al/Mg], and we discuss the results of these and other extreme velocity stars whose origins probably lie in the distant galactic halo.

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