Ultraviolet variability of the massive W-R binary system HDE 311884 = WR 47

Details Ultraviolet variability of the massive W-R binary system HDE 311884 = WR 47 Ultraviolet variability of the massive W-R binary system HDE 311884 = WR 47

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...376..272k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 376, July 20, 1991, p. 272-277. Research supported by DOE and NSERC.

Astronomy and Astrophysics

Astronomy

Binary Stars, Massive Stars, O Stars, Stellar Spectra, Ultraviolet Spectra, Wolf-Rayet Stars, Iue, Line Spectra, Spectrum Analysis, Ultraviolet Astronomy

Scientific paper

IUE observations and their analysis of the massive WN6 + O binary system HDE 311884 are presented. The phase-dependent variations are like those of WN4-6 binaries studied previously, with atmospheric eclipses evident in the N IV 1718 A and C IV 1550 A lines, and in the Fe V + VI pseudocontinuum at wavelengths below 1480 A. The considerable variability longward of 1700 A is due mostly to Fe II and Fe III lines.

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