PHOTOMETRIC-OBSERVATIONS OF THE BINARY-SYSTEM V350-LACERTAE

DEMIRCAN O., DERMAN E., KAHRAMAN G.

ASTROPHYSICS AND SPACE SCIENCE, cilt.188, sa.1, ss.151-158, 1992 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 188 Sayı: 1
  • Basım Tarihi: 1992
  • Doi Numarası: 10.1007/bf00642932
  • Dergi Adı: ASTROPHYSICS AND SPACE SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.151-158
  • Ankara Üniversitesi Adresli: Hayır

Özet

Differential UBV observations of the small amplitude (0.12 mag in V) single-lined active binary V350 Lac are presented. It was observed that the light minima occur in conjuction time. A shift of the light curve (0.05 in orbital phase) towards lower phases could be due to a small error in the light elements. The primary minimum is about 0.04 mag deeper than the secondary. It was shown that different depths of two light minima are not produced by the reflection effect but due primarily to gravity darkening on the tidally elongated and synchronously rotating visible component. An O'Connel effect observed as the brighter primary maximum could be an indication of starspot activity or gas streaming between the components.