Stroemgren metallicity calibration: the m1, b-y relation
Astrophysics
2007-11-26 v1
Abstract
We performed a new calibration of the Stroemgren metallicity index m1 based on the b-y color of cluster red giant stars. The current Metallicity-Index-Color 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.
Keywords
Cite
@article{arxiv.0711.3534,
title = {Stroemgren metallicity calibration: the m1, b-y relation},
author = {A. Calamida and G. Bono and P. B. Stetson and L. M. Freyhammer and S. Cassisi and F. Grundahl and A. Pietrinferni and M. Hilker and F. Primas and T. Richtler and M. Romaniello and R. Buonanno and F. Caputo and M. Castellani and C. E. Corsi and I. Ferraro and G. Iannicola and L. Pulone},
journal= {arXiv preprint arXiv:0711.3534},
year = {2007}
}
Comments
3 pages, 2 figures; to appear in Mem. Soc. Astr. Italiana, Vol. 79/2 (proceeding Cefalu' Workshop "XXI Century Challenges for Stellar Evolution", ed. S. Cassisi & M. Salaris)