Semidetached systems of spectral type B: BF Aurigae,. mu. /sup 1/ Scorpii, and V Puppis

Journal Article · Thu Feb 01 04:00:00 EST 1979 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/112412· OSTI ID:6468102

Schneider, D P; Darland, J J; Leung, K

The photoelectric observations of BF Aur by Mannino, Bartolini, and Biolchini, ..mu../sup 1/ Sco by Stibbs, and V Pup by Hogg were analyzed with the Wilson and Devinney approach. All three systems were found to have semidetached configurations, and improved absolute dimensions are presented. V Pup and ..mu../sup 1/ Sco are presently in the slow phase of case A mass exchange; the primaries are still on the main sequence. The primary of ..mu../sup 1/ Sco does not appear underluminous as has been reported, while the primary of V Pup may be underluminous by over 1 magnitude. BF Aur is one of the very few systems with the semidetached component being the more massive one. Due to uncertainties in the spectroscopic orbit a unique model cannot be presented, but one with a mass ratio of 0.83 is the most consistent with the observations. Since all three systems are evolved, they have no direct relevance to the theory of stellar fission. Based on a survey of 13 close binaries it is found that classical approaches cannot determine whether such systems are detached, semidetached, or in contact.

• Research Organization: Hale Observatories, California Institute of Technology, Carnegie Institution of Washington, Pasadena, California 91101
• OSTI ID: 6468102
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 84:2; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BINARY STARS
MAIN SEQUENCE STARS
MASS TRANSFER
MOTION
PHOTOMETRY
PROPER MOTION
STAR EVOLUTION
STARS
VELOCITY