Discovery of a magnetic DA white dwarf with distinct H beta and H alpha Zeeman triplets.
Abstract
The authors report the discovery of a further single magnetic white dwarf of type DA with distinct Hα and Hβ Zeeman triplets. HS 1254+3430 (V≈17) was found as an apparent emission line object on a deep objective prism plate and was subsequently identified spectroscopically. From the Zeeman splitting of Hα and Hβ, the magnetic field of HS 1254+3430 is estimated as 9.5±0.5 MG, and the effective temperature derived from the continuous energy distribution is Teff = 15±4×103K. The coordinates are α = +12h54m53s, δ = +34°30arcmin52arcsec (1950).
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- September 1987
- Bibcode:
- 1987A&A...183L...7H
- Keywords:
-
- H Alpha Line;
- H Beta Line;
- Magnetic Stars;
- Stellar Spectra;
- White Dwarf Stars;
- Zeeman Effect;
- Fine Structure;
- Line Spectra;
- Stellar Magnetic Fields;
- Stellar Temperature;
- Astrophysics