HDE 311884 - A massive Wolf-Rayet binary

Details HDE 311884 - A massive Wolf-Rayet binary HDE 311884 - A massive Wolf-Rayet binary

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...241.1050n&link_type=abstract

Astrophysical Journal, Part 1, vol. 241, Nov. 1, 1980, p. 1050-1054.

Astronomy and Astrophysics

Astrophysics

46

Binary Stars, Early Stars, Hot Stars, Stellar Spectra, Supermassive Stars, Wolf-Rayet Stars, Emission Spectra, Line Spectra, Main Sequence Stars, O Stars, Radial Velocity

Scientific paper

A preliminary spectroscopic orbit has been obtained for the southern Wolf-Rayet binary HDE 311884. On the basis of emission lines observed in 21 blue spectrograms of the binary spanning 13 days and an additional plate taken a year earlier, a period of 6.34 days was obtained, and orbital elements were determined. The absorption lines of the spectrum of the weaker star indicate that it is an early type O star. Minimum masses of 47 and 40 solar masses are obtained for the O companion and WN6 star, respectively, the latter of which is significantly larger than the usual mass of approximately 10 solar masses assumed for Wolf-Rayet stars.

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