Photometric solution and evolutionary state for the newly discovered W UMa systems GSC-02137-0222 and USNO-A2.0 1200-18678842

Photometric analysis for the newly discovered systems GSC-02137-0222 and USNO-A2.0 1200-18678842 were carried out using the most recent version of the Wilson and Devinney code based on model atmospheres by Kurucz (1993) and a pass band prescription has been used for the radiative treatment. Parameters of the accepted solution were calculated for both systems and the spectral type of the components of the studied systems were adopted. Distance to each system was calculated and physical properties were estimated. Locations of the two systems on the theoretical mass-luminosity and mass radius relations revealed good fit for both components of GSC-02137-0222, good fit for the primary and poor fir for the secondary component of the system USNO-A2.0 1200-18678842.