IUE observations of phase-dependent variations in WN + O systems

Details IUE observations of phase-dependent variations in WN + O systems IUE observations of phase-dependent variations in WN + O systems

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...297..255k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 297, Oct. 1, 1985, p. 255-265.

Astronomy and Astrophysics

Astronomy

57

Eclipsing Binary Stars, O Stars, Plasma Interactions, Spaceborne Astronomy, Ultraviolet Spectra, Wolf-Rayet Stars, Absorption Spectra, Iue, Line Spectra, Optical Thickness, Periodic Variations, Spectral Energy Distribution, Stellar Atmospheres, Stellar Spectrophotometry, Stellar Winds

Scientific paper

IUE observations of six WN + O Wolf-Rayet (W-R) systems are reported. The periodic variations in five of the systems are shown to result primarily from selective atmospheric eclipses of the O star continuum by the W-R wind. An optical depth distribution of the form tau inversely proportional to radius is suggested for radii greater than 14 solar radii. Phase-dependent variations in the C IV 1550 absorption components in V444 Cyg, HD 90657, and HD 211853 are interpreted as wind-wind collision effects.

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