The Temperature Scale of Hot DA White Dwarfs: Temperatures from Far-Ultraviolet Continuum Fluxes
Abstract
Observed far-UV to visible flux ratios of all DA white dwarfs hotter than about 25,000 K are compared with ratios predicted by models in order to derive effective temperatures for the stars. All suitable IUE spectra of seven hot DA white dwarfs for which accurate temperatures based on hydrogen line profiles were available are used to derive a flux correction to the 1980 IUE absolute calibration. Application of the corrections to the IUE spectra results in derived temperature which are consistent with the line profile temperatures.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- August 1990
- DOI:
- 10.1086/169080
- Bibcode:
- 1990ApJ...359..483F
- Keywords:
-
- Far Ultraviolet Radiation;
- Stellar Radiation;
- Stellar Temperature;
- Ultraviolet Spectra;
- White Dwarf Stars;
- Exosat Satellite;
- Interstellar Extinction;
- Iue;
- Stellar Atmospheres;
- Stellar Spectra;
- Stellar Spectrophotometry;
- Astrophysics;
- SPECTROPHOTOMETRY;
- STARS: ATMOSPHERES;
- STARS: WHITE DWARFS;
- ULTRAVIOLET: SPECTRA