Binary Populations of Carbon-Enhanced Metal-Poor Stars

Details Binary Populations of Carbon-Enhanced Metal-Poor Stars Binary Populations of Carbon-Enhanced Metal-Poor Stars

2009-09-26

arxiv.org/abs/0909.4891v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

Accepted for publication in PASA. Three pages, one figure

Scientific paper

We construct binary-star population nucleosynthesis models of carbon-enhanced metal poor (CEMP) stars. We compare the CEMP to EMP (extremely metal poor) ratio of our models to the observed ratio and find it is an order of magnitude too small. Through an increase in the efficiency of third dredge-up in low-mass, low-metallicity thermally-pulsing asymptotic-giant branch (TPAGB) stars our models better match the observations.

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