Publication of IOTA/ME members'paper
Second ISI paper of the Iranian permanent members of IOTA/ME was published in the New Astronomy journal with the help of Iranian Space Agency (ISA). This paper entitled New Light Curve Analysis and Period Changes of the Overcontact Binary EQ Tauri is compiled by Farida Farsian, Maryam Nemati and Amir Hasanzadeh from Eclipse and Variable Stars department.Abstract
A photometric CCD study of EQ Tauris was carried out in the R, V and B bands. These new data were analysed by using the PHOEBE and Binary Marker 3 programs, which yielded the geometrical system parameters and mass and radius of both stars. We find these to confirm the results of Pribulla and Vanko (2002). Using these new data together with data from the literature, the orbital period variations were studied by using the Kalimeris method. We find the same timescale of variability of the orbital period as Pribulla and Vanko (2002), namely about 49 years.