Updated UBV light-curve and period analysis of eclipsing binary HS Herculis

Bozkurt Z. , Degirmenci O. L.

ASTROPHYSICS AND SPACE SCIENCE, cilt.304, ss.29-33, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 304
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1007/s10509-006-9060-9
  • Sayfa Sayıları: ss.29-33


UBV light-curves of the eclipsing binary HS Herculis, obtained in 2002-2003 observational seasons, were analysed with Wilson-Devinney computer code. New absolute dimensions of the system were calculated using the results of the light-curve analysis. Period variation of the system was also investigated. Several new times of minima have been secured for this problematic system. An apsidal motion with a period of 80.7 years was confirmed and a third body in a pretty eccentric orbit (e(3) = 0.90 +/- 0.08) with a period of 85.4 years was found. The corresponding internal structure constants of the binary system, logk(2), and the mass of the third body were derived.