A&A Supplement Ser., Vol. 124, September 1997, 499-508
Received September 12; accepted December 6, 1996
R. Clement
- V. Reglero
- M. Garcia
- J. Fabregat
- J. Suso
Send offprint request: R. Clement
Departamento de Astronomıa y Astrofısica,
Universidad de Valencia,
Dr Moliner 50, E-46100, Burjassot, Valencia, Spain
e-mail: clement@deneb.matapl.uv.es
Departamento de Fısica Aplicada,
E.U.I. Industrial, Universidad Politécnica de Madrid,
Ronda de Valencia 3, E-28012 Madrid, Spain
New high-quality light curves of the late-type binary system
BH Vir have been obtained during a 6 year photometric
uvby and 
monitoring program of low mass
eclipsing binaries (Clement et al. 1997), hereafter
Papers I and II.
This paper presents detailed analysis of this binary
based on the four light curves obtained within our program.
The activity wave superimposed on the eclipse-modulated light curves has been
adjusted and removed by using a new iterative application of the standard
EBOP code together with truncated Fourier Series fittings.
Combining the recent radial velocity curves
(Popper 1995) with the geometrical elements deduced from the
"clean" photometric light curves, the absolute parameters of the system are
calculated.
BH Vir appears as a binary composed by two main sequence G0 and G2 stars
with solar chemical composition lying on the same isochrone
(
years).
The accuracy obtained on the absolute parameters determination allows us to include BH Vir on the select group of late-type stars to be used on the estimation of the Mass-Luminosity-Relationship.
keywords: stars: binaries: eclipsing -- stars: late-type -- stars: activity -- stars: fundamental parameters -- stars: individual: BH Vir -- stars: evolution