Other
Scientific paper
Mar 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...351..666u&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 351, March 10, 1990, p. 666-674. Research supported by NSERC.
Other
31
Line Spectra, Stellar Models, Stellar Spectra, Visible Spectrum, Wolf-Rayet Stars, Carbon, Early Stars, Helium Ions, Spectral Energy Distribution, Spectrum Analysis, Stellar Mass Accretion
Scientific paper
High signal-to-noise spectra of HD 191765, WN6, obtained in the spectral range from 5150 to 6030 A on ten nights over two months in 1988 are examined for changes in the profiles of emission lines. No evidence was found of systematic trends in the behavior of the subpeaks on an hourly, nightly, or monthly time scale. The sharpness of the subpeaks indicates that broadening by the electrons in the intrinsic wind of the star is slight. The profile of He I 5876 A is smoother than the other profiles and remains constant in shape, which is double-peaked and similar to what may be expected from line formation in a thin narrow rotating disk with a hole in the middle.
Dinshaw Nadine
Gilroy Kalpana Krishnaswamy
Hill Grant Michael
Underhill Anne. B.
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