Resumen de Detecting variations of the orbital elements due to periastron effect in eclipsing binaries

Manuel Andrade , J. A. Docobo Durántez

• In this study we examine the relation between the dynamical evolution of the eclipsing binaries and their observed light curves. More precisely, we focus our attention in the influence of mass loss along with what is known as the periastron effect (PE) in the light curves of non-circular eclipsing binaries. The enhanced mass loss during periastron passages gives rises to secular trends in the orbital elements of the binary system. This secular behavior can be detected by carefully examining its light curve.

  After analysing some remarkable mass-loss laws with the PE, simulations are presented for actual eclipsing binaries with unexplained variations in their light curves. They allow us to hypothesise that peristron effect could play a significant role in the evolution of these systems.