Shahinaz Yousef
Prof. of Solar Physics and Solar Terrestrial Physics
Astronomy, Space and Meteorology Dept., Faculty of Science, Cairo University, Cairo 12316- Egypt (email)
Astronomy, Space and Meteorology Dept., Faculty of Science, Cairo University, Cairo 12316- Egypt (email)
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.