First photometric investigation of some ASAS binary systems

Abstract

We present the first light curve solutions of the four binary systems observed and catalogued by the All SkyAutomated Survey (ASAS) program. The light curves are analyzed by using PHOEBE software, which is based on theWilson–Devinney method. The light curve parameters are derived and the estimated physical parameters are calculatedfrom the result of the analyses. We compare our targets to well-known binaries of similar type on the Hertzsprung–Russelldiagram and mass-radius plane. The evolutionary states of the components are also discussed.