Absolute Dimensions and Masses of SW Canis Majoris

Details Absolute Dimensions and Masses of SW Canis Majoris Absolute Dimensions and Masses of SW Canis Majoris

Jun 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aj....113.2226l&link_type=abstract

Astronomical Journal v.113, p.2226

Astronomy and Astrophysics

Astronomy

9

Binaries: Eclipsing, Stars: Individual: Sw Cma

Scientific paper

SW CMa (BD -22° 1712, HD 54520) is a detached double-lined eclipsing binary with a very eccentric (e=0.3179) orbit and a long orbital period (10.09 days). New photometric and spectroscopic data have been obtained and analyzed. The results indicate that the binary consists of a pair of AS main sequence stars with an age of about 700 million years, which puts the pair near the upper boundary of the main sequence band. The measured rate of apsidal motion due to relativistic and Newtonian causes is poorly determined by the available data, but is consistent with the theoretically predicted rate (U=14 000 years).

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