most citedStroemgren photometry of Galactic Globular Clusters. I. New Calibrations of the metallicity index

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astro-ph2007★ 73 cited

Stroemgren photometry of Galactic Globular Clusters. I. New Calibrations of the metallicity index

A. Calamida, G. Bono, P. B. Stetson +15

We present a new calibration of the Stroemgren metallicity index m1 using red giant (RG) stars in 4 globular clusters (GCs:M92,M13,NGC1851,47Tuc) with metallicity ranging from [Fe/…