1997A&AS..124..499C -
Astron. Astrophys., Suppl. Ser., 124, 499-508 (1997/September-0)
Absolute parameters for binary systems. I. The active binary BH Virginis.
CLEMENT R., REGLERO V., GARCIA M., FABREGAT J. and SUSO J.
Abstract (from CDS):
New high-quality light curves of the late-type binary system BH Vir have been obtained during a 6 year photometric uvby and Hβ monitoring program of low mass eclipsing binaries (Clement et al.,
1997A&AS..123....1C and
1997A&AS..123...59C), 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 (log(τ)=9.8±0.2years). 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.
Abstract Copyright:
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Journal keyword(s):
stars: binaries: eclipsing - stars: late-type - stars: activity - stars: fundamental parameters - stars: individual: BH Vir - stars: evolution
Simbad objects:
3
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