Carbon-enhanced metal-poor stars: A window on AGB nucleosynthesis and binary evolution: II. Statistical analysis of a sample of 67 CEMP-s stars
Many of the carbon-enhanced metal-poor (CEMP) stars that we observe in the Galactic halo are found in binary systems and show enhanced abundances of elements produced by the slow neutron-capture process (s-elements). The origin of the peculiar chemical abundances of these CEMP-s stars is believed to be accretion in the past of enriched material from a primary star in the asymptotic giant branch (AGB) phase of its evolution.We investigate the mechanism of mass transfer and the process of...[Show more]
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