Nucleosynthesis in the Stellar Systems ω Centauri and M22
Abstract
The stellar system ω Centauri (ω Cen) is well known for the large range in elemental abundances among its member stars. Recent work has indicated that the globular cluster M22 (NGC6656) also possesses an internal abundance range, albeit substantially smaller than that in ω Cen. Here we compare, as a function of [Fe/H], element-to-iron ratios in the two systems for a number of different elements using data from abundance analyses of red giant branch stars. It appears that the nucleosynthetic enrichment processes were very similar in these two systems despite the substantial difference in total mass.
- Publication:
-
Publications of the Astronomical Society of Australia
- Pub Date:
- January 2011
- DOI:
- 10.1071/AS10027
- arXiv:
- arXiv:1009.1955
- Bibcode:
- 2011PASA...28...28D
- Keywords:
-
- globular clusters: general;
- globular clusters: individual (M22;
- ω Cen);
- stars: abundances;
- Astrophysics - Solar and Stellar Astrophysics;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- 12 pages, 7 figures, accepted for publication in Publications of the Astronomical Society of Australia (PASA)