Abstract
ABSTRACT The CCD observations for the eclipsing Algol type binary systems GSC 04328-02164 in wideband BVRcIc filters and GSC 03164-01558 in B and I filters have been analyzed using the PHOEBE package (v 0.31a) to determine their orbital and physical parameters. The absolute parameters and evolutionary tracks of the two systems have been determined. The results show that the mass ratio, inclination, distance, and age for the system GSC 04328-02164 are equal to q = 0.674 0.002, i = 75.997 0.022, d = 375.477 4.299 pc, and τ = 26.76 15.65 ∗ 108 years, respectively. For the other system, GSC 03164-01558, q = 0.941 0.006, i = 88.0484 0.030, d = 444.651 9.444 pc, and τ = 53.63 9.16 ∗ 108 years.