Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....96.1076t&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 96, Sept. 1988, p. 1076-1094.
Astronomy and Astrophysics
Astronomy
87
Magellanic Clouds, Stellar Color, Stellar Magnitude, Stellar Spectrophotometry, Wolf-Rayet Stars, Carbon Stars, Emission Spectra, Line Spectra, Nitrogen, Stellar Luminosity, Ubv Spectra
Scientific paper
Absolute spectrophotometry of about 10-A resolution in the range 3400-7300 A have been obtained for southern Wolf-Rayet stars, and line-free magnitudes and colors have been constructed. The emission-line contamination in the narrow-band ubvr systems of Westerlund (1966) and Smith (1968) is shown to be small for most WN stars, but to be quite significant for WC stars. It is suggested that the more severe differences in intrinsic color from star to star of the same spectral subtype noted at shorter wavelengths are due to differences in atmospheric extent. True continuum absolute visual magnitudes and intrinsic colors are obtained for the LMC WR stars. The most visually luminous WN6-WN7 stars are found to be located in the core of the 30 Doradus region.
Massey Philip
Torres-Dodgen Ana V.
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