White-dwarf-based evaluation of the GALEX absolute calibration
White-dwarf-based evaluation of the GALEX absolute calibration
This paper describes a revised photometric calibration of the Galaxy Evolution Explorer (GALEX) magnitudes, based on measurements of DA white dwarfs. The photometric magnitudes of white dwarfs measured by GALEX are compared to predicted magnitudes based on independent spectroscopic data (108 stars) and alternately to International Ultraviolet Explorer (IUE) ultraviolet …