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Binary Populations of Carbon-Enhanced Metal-Poor Stars

Published online by Cambridge University Press:  05 March 2013

Robert G. Izzard ,
Evert Glebbeek ,
Richard J. Stancliffe  and
Onno Pols
Robert G. Izzard*
Affiliation:
Institut d'Astronomie et d'Astrophysique, Université Libre de Bruxelles, Boulevard du Triomphe, B-1050 Brussels, Belgium Sterrenkundig Instituut, Universiteit Utrecht, P.O. Box 80 000, NL-3508 TA Utrecht, The Netherlands
Evert Glebbeek
Affiliation:
Sterrenkundig Instituut, Universiteit Utrecht, P.O. Box 80 000, NL-3508 TA Utrecht, The Netherlands Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, L8S 4M1, Canada
Richard J. Stancliffe
Affiliation:
School of Mathematical Sciences, PO Box 28M, Monash University, Victoria 3800, Australia Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK.
Onno Pols
Affiliation:
Sterrenkundig Instituut, Universiteit Utrecht, P.O. Box 80 000, NL-3508 TA Utrecht, The Netherlands
*
FCorresponding author. Email: robert.izzard@ulb.ac.be
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Abstract

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We construct binary-star population nucleosynthesis models of carbon-enhanced metal-poor (CEMP) stars. We compare the CEMP to extremely metal-poor (EMP) 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 (TP-AGB) stars our models better match the observations.

Keywords

Galaxy: halonucleosynthesisstars: abundancesstars: AGBstars: binaries
Type
CEMP Stars
Information
Publications of the Astronomical Society of Australia , Volume 26 , Issue 3 , 2009 , pp. 311 - 313
Copyright
Copyright © Astronomical Society of Australia 2009

References

Abia, C., Domínguez, I., Gallino, R., Busso, M., Straniero, O., de Laverny, P. & Wallerstein, G., PASA, 20, 314 Google Scholar
Campbell, S. W. & Lattanzio, J. C., 2008, AIPC, 990, 315 Google Scholar
Frebel, A. et al., 2006, ApJ, 652, 1585 CrossRefGoogle Scholar
Hurley, J. R., Tout, C. A. & Pols, O. R., 2002, MNRAS, 329, 897 Google Scholar
Izzard, R. G., Dray, L. M., Karakas, A. I., Lugaro, M. & Tout, C. A., 2006, A&A, 460, 565 Google Scholar
Izzard, R. G., Tout, C. A., Karakas, A. I. & Pols, O. R., 2004, MNRAS, 350, 407 Google Scholar
Karakas, A. & Lattanzio, J. C., 2007, PASA, 24, 103 Google Scholar
Karakas, A. I., Lattanzio, J. C. & Pols, O. R., 2002, PASA, 19, 515 Google Scholar
Komiya, Y., Suda, T., Minaguchi, H., Shigeyama, T., Aoki, W. & Fujimoto, M. Y., 2007, ApJ, 658, 367 Google Scholar
Kroupa, P., Tout, C. & Gilmore, G., 1993, MNRAS, 262, 545 Google Scholar
Lucatello, S., Gratton, R. G., Beers, T. C. & Carretta, E., 2005a, ApJ, 625, 833 CrossRefGoogle Scholar
Lucatello, S., Tsangarides, S., Beers, T. C., Carretta, E., Gratton, R. G. & Ryan, S. G., 2005b, ApJ, 625, 825 CrossRefGoogle Scholar
Lucatello, S., Beers, T. C., Christlieb, N., Barklem, P. S., Rossi, S., Marsteller, B., Sivarani, T. & Lee, Y. S., 2006, ApJ, 652, L37 Google Scholar
Luck, R. E. & Bond, H. E., 1991, ApJS, 77, 515 Google Scholar
Stancliffe, R. J. & Glebbeek, E., 2008, MNRAS, 389, 1828 Google Scholar
Straniero, O., Chieffi, A., Limongi, M., Busso, M., Gallino, R. & Arlandini, C., 1997, ApJ, 478, 332 Google Scholar
Suda, T., Katsuta, Y., Yamada, S., Suwa, T., Ishizuka, C., Komiya, Y., Sorai, K., Aikawa, M. & Fujimoto, M. Y., 2008, PASJ, 60, 1159 Google Scholar
Tsangarides, S., Ryan, S. G. & Beers, T. C., 2004, MmSAI, 75, 772 Google Scholar
Wallerstein, G. & Knapp, G. R., 1998, ARA&A, 36, 369 Google Scholar