Updated UBV Light-Curve and Period Analysis of Eclipsing Binary HS Herculis
Authors: Bozkurt, Zeynep; Değirmenci, Ömer
Source: Astrophysics and Space Science, Volume 304, Numbers 1-4, August 2006 , pp. 29-33(5)
Abstract: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, log k 2, and the mass of the third body were derived.
Document Type: Research Article
Publication date: 2006-08-01