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The luminosity calibration of the uvby-$β$ photometry

C. Jordi·X. Luri·E. Masana·J. Torra·F. Figueras·A. Domingo·A. E. Gómez·M. O. Mennessier
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Abstract

The ESA HIPPARCOS satellite has provided astrometry of unprecedented accuracy, allowing to reassess, improve and refine the pre-HIPPARCOS luminosity calibrations. We review the "classical" absolute magnitude calibrations with the Stroemgren-Crawford intermediate-band photometric system. A small zero point correction of about 2-4% seems necessary, as well as to refine the dependences on metallicity and projected rotational velocity. The need of a rigorous statistical treatment of the extremely precise HIPPARCOS to derive definite dependences of the luminosity on physical stellar parameters is emphasized.

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C. Jordi, X. Luri, E. Masana, J. Torra, F. Figueras, A. Domingo, A. E. Gómez, M. O. Mennessier. 2000-10-02. The luminosity calibration of the uvby-$β$ photometry. https://arxiv.org/abs/astro-ph/0010019

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