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Towards the absolute planes: a new calibration of the Bolometric Corrections and Temperature scales for Population II Giants

P. Montegriffo·F. R. Ferraro·L. Origlia·F. Fusi Pecci
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Abstract

We present new determinations of bolometric corrections and effective temperature scales as a function of infrared and optical colors, using a large database of photometric observations of about 6500 Population II giants in Galactic Globular Clusters (GGCs), covering a wide range in metallicity (-2.0<[Fe/H]<0.0). New relations for BC_K vs (V-K), (J-K) and BC_V vs (B-V), (V-I), (V-J), and new calibrations for T_eff, using both an empirical relation and model atmospheres, are provided. Moreover, an empirical relation to derive the R parameter of the Infrared Flux Method as a function of the stellar temperature is also presented.

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P. Montegriffo, F. R. Ferraro, L. Origlia, F. Fusi Pecci. 1998-04-28. Towards the absolute planes: a new calibration of the Bolometric Corrections and Temperature scales for Population II Giants. https://doi.org/10.1046/j.1365-8711.1998.01553.x

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