C.D.S. - SIMBAD4 rel 1.7 - 2021.01.25CET01:29:36

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.


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:

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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Number of rows : 3

N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
1 V* BH Vir RS* 13 58 24.8603932736 -01 39 38.953813515   10.29 9.68   9.047 F6/8V 191 0
2 HD 121935 * 13 58 37.0802355480 -01 36 22.099889842   10.930 10.350 9.96 9.694 G3/5 14 0
3 HD 139643 PM* 15 38 44.9651515902 +15 24 51.643322142   8.40 7.96     F5 9 0

    Equat.    Gal    SGal    Ecl

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