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Carbon-Enhanced Metal-Poor Stars. III. Main-Sequence Turnoff Stars from the SDSS SEGUE Sample

Aoki, Wako; Beers, Timothy C; Sivarani, T; Marstellar, B; Lee, Young Sun; Honda, Satoshi; Norris, John; Ryan, Sean G; Carollo, Daniela


The chemical compositions of seven CEMP turnoff stars are determined from high-resolution spectroscopy. Five are selected from the SDSS SEGUE sample of metal-poor stars. Another star chosen from the SDSS SEGUE sample has only a weak upper limit on its carbon abundance obtained from the high-resolution spectrum. The effective temperatures are all higher than 6000 K, while the metallicities, parameterized by [Fe/H], are all below -2; the star with the lowest iron abundance has [Fe/H] = -3.1. Six...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
Source: Astrophysical Journal, The
DOI: 10.1086/533517


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