Discovery of a magnetic DA white dwarf with distinct H-beta and H-alpha Zeeman triplets

Details Discovery of a magnetic DA white dwarf with distinct H-beta and H-alpha Zeeman triplets Discovery of a magnetic DA white dwarf with distinct H-beta and H-alpha Zeeman triplets

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...183l...7h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 183, no. 1, Sept. 1987, p. L7, L8.

Astronomy and Astrophysics

Astrophysics

9

H Alpha Line, H Beta Line, Magnetic Stars, Stellar Spectra, White Dwarf Stars, Zeeman Effect, Fine Structure, Line Spectra, Stellar Magnetic Fields, Stellar Temperature

Scientific paper

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).

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