A photometric study of BH Cas

Details A photometric study of BH Cas A photometric study of BH Cas

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...374..164z&link_type=abstract

Astronomy and Astrophysics, v.374, p.164-170 (2001)

Astronomy and Astrophysics

Astrophysics

5

Binaries: Eclipsing Bh Cas

Scientific paper

New CCD observations of the contact binary system BH Cas are presented in this paper. New times of minima and an ephemeris based on our observations are also given. Complete light curves obtained in the V, R and I filters have been analyzed with the Wilson-Devinney code to derive the geometrical and physical parameters of the system. The final solution leads to a contact configuration (f ~ 21-22%). We have found that the photometric mass ratio differs from the spectroscopic one by about 13%, a discrepancy which is not uncommon for other W UMa systems. The absolute elements of the system are used to study its evolutionary status. The results show that BH Cas is a fairly evolved W-type W UMa system. Based on observations collected at the Kryonerion Observatory, Greece. The original observations are available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/374/164

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