The Frequency of Carbon Rich Stars Among Extremely Metal Poor Stars
Abstract
We discuss the fraction of carbon stars (C-stars) and of C-enhanced stars among samples of candidate extremely metal poor (EMP: [Fe/H] ≤ -3.0 dex) stars selected from the Hamburg/ESO Survey (HES), obtaining a total for C-rich stars with [C/Fe] ≥ +1.0 dex of 14.4±4%. We also present the key results of detailed abundance analyses of a sample of 14 C-stars selected in this way.
- Publication:
-
From Lithium to Uranium: Elemental Tracers of Early Cosmic Evolution
- Pub Date:
- 2005
- DOI:
- 10.1017/S1743921305005570
- arXiv:
- arXiv:astro-ph/0506745
- Bibcode:
- 2005IAUS..228..213C
- Keywords:
-
- Astrophysics
- E-Print:
- Submitted to the proceedings of the IAU Symposium 228, From Lithium to Uranium: Elemental Tracers of Early Cosmic Evolution (Paris, 23--27 May 2005), Cambridge University Press, ed: Vanessa Hill, Patrick Francois &