Photometric study ofWUMa type binaries in the intermediate open cluster NGC 7789

Abstract

The light curve solutions of twoWUMa binary systems in the intermediate open cluster NGC 7789 are presented in this paper. These variables were observed using the 2m telescope of the IUCAA-Girawali Observatory. The V passband photometric solutions of the two W UMa binaries were obtained using the latest version of theW–D program. The result shows that both systems are H-subtypeWUMa binaries with high mass ratios.