Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...108..326m&link_type=abstract
Astronomy and Astrophysics, vol. 108, no. 2, Apr. 1982, p. 326-333. Research supported by the National Research Council of Cana
Astronomy and Astrophysics
Astrophysics
28
Companion Stars, Stellar Mass, Stellar Spectrophotometry, Variable Stars, White Dwarf Stars, Wolf-Rayet Stars, Binary Stars, Electrophotometry, Emission Spectra, Helium Ions, Light Curve, Line Spectra, Neutron Stars, Radial Velocity, Stellar Envelopes, Stellar Rotation, Stellar Winds
Scientific paper
Extensive intermediate-band photo-electric photometry suggests that HD 86161 is an ellipsoidal variable with a period of 10.73 days. Together with high-dispersion spectroscopic data, which indicate a very low-amplitude radial velocity orbit with this period, the unseen companion to the WN 8 star has a most probable mass in the range 0.5-1.2 solar mass. This may be a white dwarf, or more likely, a neutron star. The Wolf-Rayet envelope shows stronger variability the further one proceeds outwards to lower wind densities.
Moffat Anthony F. J.
Niemela Virpi S.
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