About the eclipsing Wolf-Rayet binary HD 214419, CQ Cephei

Details About the eclipsing Wolf-Rayet binary HD 214419, CQ Cephei About the eclipsing Wolf-Rayet binary HD 214419, CQ Cephei

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...351..651u&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 351, March 10, 1990, p. 651-665.

Astronomy and Astrophysics

Astrophysics

20

Companion Stars, Eclipsing Binary Stars, Stellar Envelopes, Stellar Models, Stellar Spectra, Wolf-Rayet Stars, B Stars, Cepheus Constellation, Stellar Orbits, Visible Spectrum

Scientific paper

Radial velocities and line profiles from spectrograms of the eclipsing WR binary star CQ Cephei are reported. Model stars and brightness ratios in the V band are used to obtain an internally consistent model for the system. The WR star appears to be a hydrogen-burning star with M(WR) = 13.6 solar masses, R(WR) = 5.5 solar radii, and T(eff) = 29,000 K, while the companion star has M(comp) = 16.0 solar masses, R(comp) = 6.4 solar radii, and T(eff) = 30,800 K. It is probably a B0 star. The sizes of the orbits are a(WR) = 9.7 solar radii and a(comp) = 8.2 solar radii. The complex shortward-displaced absorption components of He 5876 A indicate that the stars are buried in several streams of plasma.

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