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The Chemical Composition of Carbon-rich, Very Metal Poor Stars: A New Class of Mildly Carbon Rich Objects Without Excess of Neutron-capture Elements

Aoki, Wako; Norris, John; Ryan, Sean G; Beers, Timothy C; Anderson, W G

Description

We report on an analysis of the chemical composition of five carbon-rich, very metal poor stars based on high-resolution spectra. One star, CS 22948-027, exhibits very large overabundances of carbon, nitrogen, and the neutron-capture elements, as found in the previous study of Hill et al. This result can be interpreted as a consequence of mass transfer from a binary companion that previously evolved through the asymptotic giant branch stage. By way of contrast, the other four stars we...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
URI: http://hdl.handle.net/1885/75148
Source: Astrophysical Journal, The
DOI: 10.1086/338756

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