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The Puzzling Frequencies of CEMP and NEMP Stars

Published online by Cambridge University Press:  05 March 2013

O. R. Pols ,
R. G. Izzard ,
E. Glebbeek  and
R. J. Stancliffe
O. R. Pols*
Affiliation:
Sterrekundig Instituut Utrecht, P.O. Box 80 000, NL-3584 TA Utrecht, The Netherlands
R. G. Izzard
Affiliation:
Sterrekundig Instituut Utrecht, P.O. Box 80 000, NL-3584 TA Utrecht, The Netherlands Institut d'Astronomie et d'Astrophysique, Université Libre de Bruxelles, CP226, Boulevard du Triomphe, B-1050 Bruxelles, Belgium
E. Glebbeek
Affiliation:
Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, L8S 4M1, Canada
R. J. Stancliffe
Affiliation:
Centre for Stellar and Planetary Astrophysics, Monash University, P.O. Box 28M, Clayton, VIC 3800, Australia
*
ECorresponding author. Email: o.r.pols@uu.nl
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Abstract

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We present the results of binary population simulations of carbon- and nitrogen-enhanced metal-poor (CEMP and NEMP) stars. We show that the observed paucity of very nitrogen-rich stars puts strong constraints on possible modifications of the initial mass function at low metallicity.

Keywords

stars: AGB and post-AGBstars: abundancesstars: binariesstars : evolutionstars: mass function
Type
CEMP Stars
Information
Publications of the Astronomical Society of Australia , Volume 26 , Issue 3 , 2009 , pp. 327 - 329
Copyright
Copyright © Astronomical Society of Australia 2009

References

Aoki, W., Beers, T. C., Christlieb, N., Norris, J. E., Ryan, S. G. & Tsangarides, S. 2007, ApJ, 655, 492 CrossRefGoogle Scholar
Duquennoy, A. & Mayor, M. 1991, A&A, 248, 485 Google Scholar
Frebel, A., Christlieb, N., Norris, J. E., Aoki, W. & Asplund, M., 2006, ApJ, 652, 1585 CrossRefGoogle Scholar
Izzard, R. G., Tout, C. A., Karakas, A. I. & Pols, O. R. 2004, MNRAS, 350, 407 CrossRefGoogle Scholar
Izzard, R. G., Dray, L. M., Karakas, A. I., Lugaro, M. & Tout, C. A., 2006, A&A, 460, 565 Google Scholar
Johnson, J. A., Herwig, F., Beers, T. C. & Christlieb, N. 2007, ApJ, 658, 1203 CrossRefGoogle Scholar
Karakas, A. I., Lattanzio, J. C. & Pols, O. R. 2002, PASA, 19, 515 CrossRefGoogle Scholar
Karakas, A. I. & Lattanzio, J. C. 2007, PASA, 24, 103 CrossRefGoogle Scholar
Komiya, Y., Suda, T., Minaguchi, H., Shigeyama, T., Aoki, W. & Fujimoto, M. Y., 2007, ApJ, 658, 367 CrossRefGoogle Scholar
Kroupa, P., Tout, C. A. & Gilmore, G. 1993, MNRAS, 262, 545 CrossRefGoogle Scholar
Lucatello, S., Tsangarides, S., Beers, T. C., Carretta, E., Gratton, R. G. & Ryan, S. G. 2005a, ApJ, 625, 825 CrossRefGoogle Scholar
Lucatello, S., Gratton, R. G., Beers, T. C. & Carretta, E. 2005b, ApJ, 625, 833 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 CrossRefGoogle Scholar
Miller, G. E. & Scalo, J. M. 1979, ApJS, 41, 513 CrossRefGoogle Scholar
Suda, T. et al., 2008, PASJ, 60, 1159 CrossRefGoogle Scholar