H-alpha line profiles in DA white dwarfs

Details H-alpha line profiles in DA white dwarfs H-alpha line profiles in DA white dwarfs

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pasp...97..634m&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 97, July 1985, p. 634-636.

Astronomy and Astrophysics

Astronomy

13

H Alpha Line, Line Spectra, Stellar Atmospheres, Stellar Rotation, White Dwarf Stars, Cool Stars

Scientific paper

Rotational velocities have been determined for several white dwarfs from the sharp NLTE core of the Hα profile. A new synthetic profile has been computed for Teff = 16,000K, log g = 8.0 white dwarfs; this profile fits closely the observed spectra of white dwarfs of this temperature. The authors confirm that Wolf 485A rotates with a velocity v sin i = 42±9 km s-1. Rotational velocities in 40 Eri B, SA 29-130, and L970-30 are less than 20 km s-1.

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