n riazi - Physics Department and Biruni Observatory, Shiraz University, Shiraz, Iran
mr bagheri - Department of Physics, Isfahan University of Technology, Isfahan, Iran
a djanabzadeh - Tarbiat Modarres University, Tehran, Iran

UBV light curves together with color curves of the semi-detached eclipsing binary RZ Cas are presented. The light curves are analyzed and the spectroscopic elements and the Hipparcos information are used to compute the absolute parameters of the system. The light curve anomalies and occasional flat minima are discussed. Based on the existing evidence, a straightforward explanation for the primary minimum anomalies is presented.

Eclipsing binaries, photoectric photometry