Abundance analysis of three metal poor stars: CS 22166-0030, CS 22186-0005, and CS 30344-0033
Abstract
We present the abundance analysis of three very metal poor stars, CS 22166-0030 ([Fe/H]=-2.96), CS 22186-0005 ([Fe/H]=-2.70), and CS 30344-0033 ([Fe/H]=-2.90). Our study is based on high resolution spectra which were obtained from SARG (on TNG), HARPS (on 3.6m), and UVES (on VLT) spectrographs and one-dimensional ATLAS9 model atmospheres. We derived the abundances for 2, 9, and 16 atomic species in the spectrum of CS 22166-0030, CS 22186-0005, and CS 30344-0033, respectively. The Na and Mg abundances of CS 22166-0030 are highly under-abundant with respect to the solar values. The abundance patterns of CS 22186-0005 and CS 30344-0033 are consistent with the other halo stars within abundance uncertainties.
- Publication:
-
Setting the scene for Gaia and LAMOST
- Pub Date:
- January 2014
- DOI:
- 10.1017/S1743921313006595
- Bibcode:
- 2014IAUS..298..381C
- Keywords:
-
- stars: abundances;
- stars: Population II;
- Galaxy: abundances;
- Galaxy: evolution