The Light Curve and the Orbital Period Variations of Binary System TT Andromedae

Davood Manzoori, Salar Abbasvand, Vahid Abbasvand
2017 International Journal of Astronomy and Astrophysics International Journal of Astronomy and Astrophysics  
The first photoelectric light curve analysis of the TT And system in a broad band filter (400 -700 nm) was carried out using the PHOEBE program. The absolute dimensions of the system are determined and its evolution is discussed. The most distinct feature of the system is a comparatively very low mass of the cooler component i.e. M 2 = 0.26M ⊙ . Moreover, using the Observed-minus-Calculated data, the period changes of the system are studied, which reveal the presence of a third body orbiting
more » ... system with a period P 3 = 63.89 yr, superimposed on which is a secular period increase, which is ascribed to mass transfer with a rate −7.60 × 10 −12 M ⊙ yr −1 from the cooler secondary component.
doi:10.4236/ijaa.2017.72009 fatcat:jnodosmq3reg3dakt5pi3wvs6q