Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...229..123v&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 229, no. 1, March 1990, p. 123-132.
Astronomy and Astrophysics
Astrophysics
16
Stellar Spectrophotometry, Variable Stars, Wolf-Rayet Stars, Emission Spectra, Interstellar Extinction, Light Curve, Stellar Atmospheres, Stellar Color
Scientific paper
Photometric monitoring (VBLUW system) of three variable Wolf-Rayet stars WR 46 (WN 3p), WR 50 (WC 6 + a), and WR 86 (WC 7 + a) are presented and discussed. The light variations have time scales in the order of a few hours with amplitudes of 0.03-0.1 m. Combining the results with those of Monderen et al. (1988), it is concluded that the light variations of the WN 3p star are largely due to continuum variations, with a small influence of emission line variations entering into the bandpasses. Most of the light variations of the two mid-WC stars must be caused by the large number of emission lines coinciding with the band passes, while the influence of continuum variations is likely small. Several possible explanations for the variations are offered.
Larsen I.
van der Hucht Karel A.
van Genderen Arnout M.
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