Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...225..175v&link_type=abstract
Astrophysical Journal, Part 1, vol. 225, Oct. 1, 1978, p. 175-180.
Astronomy and Astrophysics
Astrophysics
7
Binary Stars, Dwarf Stars, Hot Stars, Stellar Spectra, Wolf-Rayet Stars, B Stars, Balmer Series, Emission Spectra, H Lines, Helium, Stellar Envelopes, Stellar Winds
Scientific paper
A coarse analysis of the hydrogen and helium lines of HD 45166 is performed which supports the interpretation that the object is a binary composed of a late B star and a star of approximately one solar radius with a continuous energy distribution very much like that of Zeta Pup. It is surrounded by an envelope expanding at 150 km/s formed by mass ejection at a rate of only 5 hundred-millionths of a solar mass per yr. The small size and low ejection velocity give densities of He II in the envelope of about 100 billion per cu cm. The envelope environment is thus much like that of a normal Wolf-Rayet star, which it mimics with remarkable consistency.
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