White dwarf luminosity function in GALEX and Gaia DR2
Abstract
Using data from the Galaxy Evolution Explorer (GALEX) and Gaia DR2, we calculate white dwarf luminosity functions (WDLF) in the near-ultraviolet (NUV), visible bands (e.g. GAIA G), and for derived total bolometric luminosities. These WDLFs take advantage of the high number of white dwarfs with accurate distances, increasing the volume and precision as compared to previous results. In computing our WDLFs, we use the V/Vmax method and account for parallax error and other flux-dependent selection effects. Our results show relationships consistent down to M = 13-14 with other LFs in the literature, although we report on key differences and calculate separately the WDLF for thin and thick disk populations.
- Publication:
-
American Astronomical Society Meeting Abstracts #235
- Pub Date:
- January 2020
- Bibcode:
- 2020AAS...23510501M