Strömgren metallicity calibration: the m_1, b-y relation.
Abstract
We performed a new calibration of the Strömgren metallicity index m_1 based on the b-y color of cluster red giant stars. The current Metallicity-Index-Color (MIC) relation is not linear in the color range 0.40 ≲ b-y ≲ 1.0, but provides iron abundances of cluster and field red giants with an accuracy of ∼ 0.25 dex.
- Publication:
-
Memorie della Societa Astronomica Italiana
- Pub Date:
- 2008
- DOI:
- 10.48550/arXiv.0711.3534
- arXiv:
- arXiv:0711.3534
- Bibcode:
- 2008MmSAI..79..673C
- Keywords:
-
- globular clusters: general;
- stars: abundances;
- stars: evolution;
- Astrophysics
- E-Print:
- 3 pages, 2 figures