New absolute magnitude calibrations for detached binaries

Details New absolute magnitude calibrations for detached binaries New absolute magnitude calibrations for detached binaries

2008-06-07

arxiv.org/abs/0806.1290v1

Astronomy and Astrophysics

Astrophysics

10 pages, 4 figures and 5 tables, accepted for publication in Astronomische Nachrichten

Scientific paper

10.1002/asna.200811002

Lutz-Kelker bias corrected absolute magnitude calibrations for the detached binary systems with main-sequence components are presented. The absolute magnitudes of the calibrator stars were derived at intrinsic colours of Johnson-Cousins and 2MASS (Two Micron All Sky Survey) photometric systems. As for the calibrator stars, 44 detached binaries were selected from the Hipparcos catalogue, which have relative observed parallax errors smaller than 15% ($\sigma_{\pi}/\pi\leq0.15$). The calibration equations which provide the corrected absolute magnitude for optical and near-infrared pass bands are valid for wide ranges of colours and absolute magnitudes: $-0.18<(B-V)_{0}<0.91$, $-1.6

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