Nelson, R. H., Şenavci, H. V., Baştürk, Ö., Bahar, E.
New Astronomy, 29, 57
Publication year: 2014


We present photometric and spectroscopic observations of the eclipsing binary system BI CVn. Wilson-Devinney analysis of its light and radial velocity curves showed that the system is a W-subtype overcontact W-UMa type binary. We computed the absolute physical parameters of the system based on a mass ratio spectroscopically determined in this study. Though the orbital period had changed somehow in the past, it has remained constant for a long time since March 1999, contradicting the previous interpretations suggesting a cyclic variation superimposed on a quadratic change.


  • (Stars:) binaries: eclipsing;
  • Stars: fundamental parameters;
  • Stars: individual (BI CVn)