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arXiv · 0711.3534

Stroemgren metallicity calibration: the m1, b-y relation

A. Calamida·G. Bono·P. B. Stetson·L. M. Freyhammer·S. Cassisi·F. Grundahl·A. Pietrinferni·M. Hilker·F. Primas·T. Richtler·M. Romaniello·R. Buonanno·F. Caputo·M. Castellani·C. E. Corsi·I. Ferraro·G. Iannicola·L. Pulone
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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.

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A. Calamida, G. Bono, P. B. Stetson, L. M. Freyhammer, S. Cassisi, F. Grundahl, A. Pietrinferni, M. Hilker, F. Primas, T. Richtler, M. Romaniello, R. Buonanno, F. Caputo, M. Castellani, C. E. Corsi, I. Ferraro, G. Iannicola, L. Pulone. 2007-11-22. Stroemgren metallicity calibration: the m1, b-y relation. https://arxiv.org/abs/0711.3534

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