Metallicity calibration and photometric parallax estimation: II. SDSS photometry

Abstract

We used the updated [Fe/H] abundances of 168 F-G type dwarfs and calibrated them to a third order polynomial in terms of reduced ultraviolet excess, delta(0.41) defined with ugr data in the SDSS. We estimated the M-g absolute magnitudes for the same stars via the re-reduced Hipparcos parallaxes and calibrated the absolute magnitude offsets, Delta M-g, relative to the intrinsic sequence of Hyades to a third order polynomial in terms of delta(0.41). The ranges of the calibrations are -2 18 mag).