A calibration of the gnkmfu system for dwarf stars

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Astronomical Catalogs, Calibrating, Dwarf Stars, G Stars, Hertzsprung-Russell Diagram, Narrowband, Stellar Spectra

Scientific paper

Calibrations to R-I and Fe/H abundance have been established for G dwarfs in the gnkmfu narrow band system. The accuracy obtained for R-I and Fe/H is + or - 0.02 and + or - 0.15, respectively. Also, a measure of internal consistency between the narrow band indices, Res (k), has been derived. A catalogue of Res (k), R-I and Fe/H, derived from the photoelectric indices, is given for 253 G dwarfs.

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