Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ap%26ss.110..321k&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 110, no. 2, March 1985, p. 321-330.
Astronomy and Astrophysics
Astrophysics
2
B Stars, Eclipsing Binary Stars, Radial Velocity, Stellar Spectra, Supergiant Stars, Velocity Measurement, Density Distribution, Hot Stars, Late Stars, Orbital Elements, Stellar Envelopes, Stellar Mass Ejection
Scientific paper
Radial velocities of both components of Zeta Aurigae have been measured on 39 grating spectra obtained in the interval February 1970 - November 1981. The evaluation of the orbital elements of the primary component confirmed the elements observed so far. The masses of the components were found to be MKsin3i = 6.4±1.7 and MBsin3i = 4.5±0.9 solar masses. With the elements obtained a radial velocity curve of the B-star has been calculated. Comparison of the radial velocities derived from the hydrogen lines of the B-star with the calculated radial velocity curve shows systematic deviations which indicate that these lines originate partly in an expanding circumstellar envelope of the system.
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