Hα variability of the B-type binary chi Aurigae

Details Hα variability of the B-type binary chi Aurigae Hα variability of the B-type binary chi Aurigae

Mar 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...331..550r&link_type=abstract

Astronomy and Astrophysics, v.331, p.550-556 (1998)

Astronomy and Astrophysics

Astrophysics

Binaries: Spectroscopic, Stars: Individual: Chi Aur, Supergiants

Scientific paper

We report several new radial velocities of the early-type spectroscopic binary chi Aur derived from photographic and RETICON spectrograms. Improved orbital elements are computed and a new orbital period P = 676 days of this system is derived. The secondary component lines are invisible in the spectrum of the system with the supergiant primary. Spectral type of the secondary component is discussed. The description of the spectrum chi Aur in the wavelength range from 6300 to 6700 Angstroms is presented. Hα emission and its variability was discovered and Hα profile behaviour is described and analyzed.

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