Analysis of light curves and apsidal motion of neglected southern eclipsing binary V399 Pup

Abstract

In this study, the Hipparcos and ASAS light curves of the eclipsing binary V399 Pup have been analyzed using the Wilson-Devinney program. The light curve analyses have found that V399 Pup is a detached binary system with eccentric orbit. The apsidal motion parameters of the system have been obtained from the O-C curve analyses. The system has been revealed to have an orbital eccentricity of e = 0.145 ± 0.006, the apsidal motion rate has been obtained ω ˙ = 0.0385 ± 0.0069 deg cycle^-1, and it corresponds to an apsidal motion period of U = 100.2 ± 18.0 years.