Nucleosynthesis in the Stellar Systems omega Cen and M22

Details Nucleosynthesis in the Stellar Systems omega Cen and M22 Nucleosynthesis in the Stellar Systems omega Cen and M22

2010-09-10

arxiv.org/abs/1009.1955v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

12 pages, 7 figures, accepted for publication in Publications of the Astronomical Society of Australia (PASA)

Scientific paper

The stellar system omega Centauri is well known for the large range in abundance among its member stars. Recent work has indicated that the globular cluster M22 (NGC 6656) also possesses an internal abundance range, albeit substantially smaller than that in omega 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.

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