On the orbital period behaviour of the contact binary BO Canum Venaticorum

Abstract

Times of minima of the contact binary BO Canum Venaticorum (BO CVn) were collected from the literature and two new times of secondary minima were determined from the new observations obtained at the Ankara University Observatory. An (O-C) analysis based on the all available times of minima yields a constant orbital period over the last 14 years instead of a period increase mentioned in the recent literature. We commend the future observations of BO CVn to solve the period problem of the system.