2013AJ....145....9Y

We analyze photometric and spectroscopic data and study the orbital period of the early-type interacting binary system V382 Cyg by using all the available data. We obtain a simultaneous light and radial velocity curve solution. The derived physical parameters of the primary and secondary stellar components are M₁= 27.9(5) M_☉, M₂= 20.8(4) M_☉, R₁= 9.7(2) R_☉, R₂= 8.5(2) R_☉, log (L₁/L_☉) = 5.152(20), and log (L₂/L_☉) = 4.954(19) while the separation of the components is a = 23.4 R_☉. Newly obtained parameters yield the distance of the system to be 1466(76) pc. Analyses of the mid-eclipse times indicate a period increase of dP/dt = 4.2(1)x10^–7 days/yr that can be interpreted in terms of the high-mass transfer (dM/dt = 6.1(5)x10^–6 M_☉/yr) from the less massive component to the more massive component. Finally, we model the evolution of the components using non-conservative codes and discuss the results obtained. The age of the binary system is estimated to be 3.85 Myr.