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2000MNRAS.314..109B - Mon. Not. R. Astron. Soc., 314, 109-122 (2000/May-1)
The discovery of photospheric nickel in the hot DO white dwarf REJ 0503-289.
BARSTOW M.A., DREIZLER S., HOLBERG J.B., FINLEY D.S., WERNER K., HUBENY I. and SION E.M.
Abstract (from CDS):
We have also developed a more objective method of determining Teff and logg, from the He lines in the optical spectrum, in the form of a formal fitting of the line profiles to a grid of model spectra, an analogue of the standard procedure utilizing the Balmer lines in DA white dwarfs. This gives the assigned uncertainties in Teff and logg a firm statistical basis and allows us to demonstrate that inclusion of elements heavier than H, He and C in the spectral calculations, exclusively considered in most published optical analyses, yields a systematic downward shift in the measured value of Teff.
Abstract Copyright: 2000, Royal Astronomical Society
Journal keyword(s): stars: abundances - stars: atmospheres - white dwarfs - ultraviolet: stars
Simbad objects: 4
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