A detached binary system BK Pegasi

Details A detached binary system BK Pegasi A detached binary system BK Pegasi

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ap%26ss.222..213d&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 222, no. 1-2, p. 213-223

Astronomy and Astrophysics

Astrophysics

4

Eclipsing Binary Stars, F Stars, Light Curve, Stellar Models, Ultraviolet Photometry, Abundance, Distance, Luminosity, Metallicity, Radial Velocity, Stellar Magnitude

Scientific paper

The UBV photometry of the detached F-type eclipsing binary BK Pegasi is presented. The light curve solution by a simple spherical model assumption suggests that a slightly hotter, larger and more luminous primary was eclipsed during the primary minimum. Combined with the radial velocity curves in Popper (1983), it was used to determine anew the system's parameters. The age and the metal abundance of the system were estimated as (3.3 +/- 0.2) x 109 yr and z = 0.028 +/- 0.003 from a comparison with the new grids of stellar models and the isochrones by Schaller et al. (1993). The distance of the system was estimated as 290 pc.

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