Physical parameters of the Algol system BP Muscae from simultaneous analysis of Geneva 7-colour light curves *,**
Observatoire de Genève, 51 chemin des Maillettes, 1290 Sauverny, Switzerland
Corresponding author: F. Carrier, Fabien.Carrier@obs.unige.ch
Accepted: 6 November 2002
The semi-detached eclipsing binary system BP Muscae has been analysed using the Wilson-Devinney program. Light curves have been obtained in the Geneva 7-colour photometric system, and radial velocity curves for both components have been measured with the spectrograph Coralie. The physical and orbital parameters have been determined through a self-consistent simultaneous solution of light curves in seven colours and of the radial velocity curves of both components. The absolute elements of the components are, for the primary (mass gainer), , , , K, and for the secondary (mass loser), , , , K. The semi-major axis A of the relative orbit is . The spectral type of the components are A0.5/1.5 V (primary) and about G5 III. The distance to BP Mus is evaluated as pc, and the colour excess E[B2-V1] as .
Key words: stars: individual: BP Muscae / stars: binaries: eclipsing / stars: binaries: close / stars: fundamental parameters / techniques: photometric / techniques: radial velocities
Based on observations collected at the Swiss 70 cm and 120 cm telescopes at the European Southern Observatory (La Silla, Chile).
© ESO, 2003