Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.124..389s&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 124, no. 2, July 1986, p. 389-396.
Astronomy and Astrophysics
Astrophysics
18
Eclipsing Binary Stars, Stellar Mass Ejection, Stellar Spectrophotometry, Wolf-Rayet Stars, Minima, Stellar Envelopes, Stellar Orbits, Stellar Winds
Scientific paper
The observed times of minimum light obtained from the photometry of Wolf-Rayet eclipsing binary stars CQ Cep and V444 Cyg are employed to derive estimates of the mass-loss rate of the Wolf-Rayet components for four cases of mass-loss and mass-exchange. In CQ Cep the extended atmosphere appears mainly as a common envelope surrounding the system which is not subject to eclipse and whose contribution to the total luminosity of the system is L3(r) = 0.29, and the dominating mode is thought to be the case in which the ejected material forms a ring rotating around the entire system and the particles of the ring are moving in the gravitational attraction of the center of mass of the system in the same sense as the binary motion. In V444 Cyg, both the case in which the ejected material from the component is falling onto its companion with no variation in the orbital angular momentum and systematic mass, and the case where the ejected material escapes out from the binary system, are considered the dominating modes.
Chaubey U. S.
Singh Mahender
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