Indication of singly ionized helium in the white dwarf GD 229

Details Indication of singly ionized helium in the white dwarf GD 229 Indication of singly ionized helium in the white dwarf GD 229

Mar 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...343l..91j&link_type=abstract

Astronomy and Astrophysics, v.343, p.L91-L93 (1999)

Astronomy and Astrophysics

Astrophysics

5

Stars: White Dwarfs, Stars: Magnetic Fields, Stars: Individual: Gd 229, Stars: Individual: Lb 11146B

Scientific paper

We comment on the applicability of the stationary line argument recently used by Jordan et al. (\cite{jordan}) to account for the unusual absorption features in the observed optical spectra of GD 229. Moreover, we provide an alternative explanation based upon the existence of neutral and singly ionized atomic helium atoms as the main elements comprising the atmosphere of this magnetized white dwarf star.

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