The peculiar binary system Epsilon Aurigae

Details The peculiar binary system Epsilon Aurigae The peculiar binary system Epsilon Aurigae

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976ap%26ss..45..439h&link_type=abstract

Astrophysics and Space Science, vol. 45, Dec. 1976, p. 439-446.

Astronomy and Astrophysics

Astrophysics

6

Binary Stars, Main Sequence Stars, Stellar Mass, Stellar Models, Stellar Structure, Cosmic Dust, Disks (Shapes), Nebulae, Stellar Evolution, Visibility

Scientific paper

Undisputed model-independent information on Epsilon Aurigae is used to evaluate different models for that peculiar binary system. It is shown that the invisible companion is not a simple spherical star and that the visible star is either in the process of contracting toward the main sequence or is evolving away from it. A model is proposed in which a dust and gas disk that may become transparent near its edges passes periodically in front of the visible star. It is concluded that the system is at a distance of 300 to 550 pc, the visible star is probably a pre-main-sequence object of approximately 10 solar masses, and the disk may be a preplanetary nebula.

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