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Carbon-enhanced Metal-poor Stars. I. Chemical Compositions of 26 Stars

Aoki, Wako; Beers, Timothy C; Christlieb, Norbert; Norris, John; Ryan, Sean G; Tsangarides, Stelios

Description

The chemical compositions of 26 metal-poor stars that exhibit strong CH and/or C 2 molecular bands are determined. Twenty-two stars in our sample satisfy our definition for carbon-enhanced metal-poor (CEMP) stars based on the carbon abundance ratio ([C/Fe]) and the evolutionary status. In addition, we measure Na abundances for nine known carbonenhanced stars. Combining our new sample with the results of previous work, we investigate the abundance and evolutionary status of a total of 64 CEMP...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
URI: http://hdl.handle.net/1885/24252
Source: Astrophysical Journal, The
DOI: 10.1086/509817

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