BI CVn - A spotted, overcontact, type-W eclipsing binary

Nelson R. H., ŞENAVCI H. V., BAŞTÜRK Ö., BAHAR E.

NEW ASTRONOMY, cilt.29, ss.57-64, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 29
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.newast.2013.11.006
  • Dergi Adı: NEW ASTRONOMY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.57-64
  • Anahtar Kelimeler: (Stars:) binaries: eclipsing, Stars: fundamental parameters, Stars: individual (BI CVn), CONTACT BINARIES, LIGHT CURVES, STARS, CYGNI
  • Ankara Üniversitesi Adresli: Evet

Özet

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. (C) 2013 Elsevier B.V. All rights reserved.