DR. PARIJAT THAKUR

Five newly observed transit light curves of the TrES-3 extra-solar planetary system are presented. Together with other light curve data from the literature, 23 transit light curves in total, which cover a timescale of 911 epochs, have been analyzed through a standard procedure. From these observational data, the system’s orbital parameters are determined and possible transit timing variations (TTVs) are investigated. Since a null TTV model produces a fit with reduced ¿2 = 1.52, our results agree with previous work that TTVs might not exist in these data. However, one-frequency oscillating TTV model, giving a fit with a reduced ¿2 = 0.93, does possess a statistically higher probability. It is thus concluded that future observations and dynamical work on this extra-solar planetary will be very important.