The system of VV Cephei derived from an analysis of the H-alpha line

Details The system of VV Cephei derived from an analysis of the H-alpha line The system of VV Cephei derived from an analysis of the H-alpha line

Apr 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jrasc..71..152w&link_type=abstract

Journal of the Royal Astronomical Society of Canada, vol. 71, Apr. 1977, p. 152-193.

Astronomy and Astrophysics

Astronomy

38

Eclipsing Binary Stars, H Alpha Line, M Stars, Stellar Spectrophotometry, B Stars, Gas Flow, Radial Velocity, Supergiant Stars, Velocity Measurement

Scientific paper

The article discusses spectra of VV Cephei obtained in the region near H-alpha, in the years 1956 to 1976. A new orbit was discerned from radial-velocity measurements of selected M-type lines and the emission line observed at H-alpha. The phase variation of the central core of the H-alpha line, the mean separation of the components, mass ratio, and individual masses of the components are reported. Two principal absorption components are almost always present; an additional emission component is noted. While the origin of the emission component remains obscure, the velocities and intensities of the absorption components are attributed to a stream of gas flowing from the M-type star, through the Lagrangian point and around the B-type star.

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