AN ANALYSIS OF CLOSE BINARIES (CB) BASED ON PHOTOMETRIC MEASUREMENTS (VIII) - AN INTERPRETATION OF CB LIGHT-CURVE SX CAS BY USING THE INVERSE-PROBLEM METHOD

The author considers current problems in the determination of the orbi tal and physical parameters for active close binaries (CB) of W Set ty pe based on the interpretation of photometric observations (Djurasevic , 1991). In this particular case, one analyses the light curves of CB SX Cas in the framework of the accretion-disc model explained in the s econd paper of this series (Djurasevic, 1992a). The light curve is ana lysed by applying the inverse-problem method described in the third pa per of the series (Djurasevic, 1992b). On the basis of the observation al material in the B and V filters (Shao, 1967), the light curves, the fundamental orbital and physical parameters of the system are estimat ed. In the paper a graphical illustration of the obtained solutions is also given. The obtained results confirm the general picture about th e active processes in CB of W Ser type.