Binary Populations of Carbon-Enhanced Metal-Poor Stars

Robert G. Izzard; Evert Glebbeek; Richard J. Stancliffe; Onno Pols

doi:10.1071/AS08066

Binary Populations of Carbon-Enhanced Metal-Poor Stars

Solar and Stellar Astrophysics 2015-05-14 v1

Authors: Robert G. Izzard , Evert Glebbeek , Richard J. Stancliffe , Onno Pols

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Abstract

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.

Keywords

carbon-enhanced metal-poor stars binary population nucleosynthesis third dredge-up TPAGB stars extremely metal-poor stars

Cite

@article{arxiv.0909.4891,
  title  = {Binary Populations of Carbon-Enhanced Metal-Poor Stars},
  author = {Robert G. Izzard and Evert Glebbeek and Richard J. Stancliffe and Onno Pols},
  journal= {arXiv preprint arXiv:0909.4891},
  year   = {2015}
}

Comments

Accepted for publication in PASA. Three pages, one figure

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