The Puzzling Frequencies of CEMP and NEMP Stars
Abstract
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.
- Publication:
-
Publications of the Astronomical Society of Australia
- Pub Date:
- September 2009
- DOI:
- 10.1071/AS08076
- arXiv:
- arXiv:0910.1489
- Bibcode:
- 2009PASA...26..327P
- Keywords:
-
- stars: AGB and post-AGB;
- stars: abundances;
- stars: binaries;
- stars : evolution;
- stars: mass function;
- Astrophysics - Solar and Stellar Astrophysics;
- Astrophysics - Galaxy Astrophysics
- E-Print:
- 3 pages, contribution to "The Origin of the Elements Heavier than Iron" in honor of the 70th birthday of Roberto Gallino, Torino, Italy, September 2008