CV Serpentis: Still eclipsing

Details CV Serpentis: Still eclipsing CV Serpentis: Still eclipsing

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982esasp.176..331h&link_type=abstract

In ESA 3rd European IUE Conf. p 331-334 (SEE N83-11889 02-88)

Computer Science

11

Eclipsing Binary Stars, O Stars, Ultraviolet Spectra, Wolf-Rayet Stars, Atmospheric Models, Stellar Magnitude, Stellar Mass Ejection, Stellar Winds

Scientific paper

Three IUE SWP instrument spectra, which show that CV Ser continues to eclipse in IV, were obtained. Data (interpreted as eclipses of the O star by the Wolf-Rayet (WR) wind) do not explain the Hjellming-Hiltner eclipse at which 80% of the WR wind was removed. Dramatic changes in size of the components are unlikely, since the out of eclipse magnitude of the system is constant. Mass loss or mass transfer explanations are suggested. A mass loss rate of 0.000072 M/yr, variable by a factor of 2 on a time scale of a year was calculated. The atmospheric eclipse model for the observed spectral variations is consistent with published results for theta Mus if the system is triple, with an unseen secondary in close orbit with the WR component. Optical radial velocities support this picture.

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