THE INTERACTING EARLY-TYPE BINARY V382 Cyg

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YASARSOY B., YAKUT K.

ASTRONOMICAL JOURNAL, vol.145, no.1, 2013 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 145 Issue: 1
  • Publication Date: 2013
  • Doi Number: 10.1088/0004-6256/145/1/9
  • Title of Journal : ASTRONOMICAL JOURNAL
  • Keywords: binaries: close, binaries: general, stars: early-type, stars: evolution, stars: fundamental parameters, stars: individual (V382 Cyg), NORTHERN MILKY-WAY, ECLIPSING BINARIES, LIGHT-CURVES, OB ASSOCIATIONS, STAR LIGHT, EVOLUTION, SYSTEMS, MINIMA, MASSES, TIMES

Abstract

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 M-1 = 27.9(5) M-circle dot, M-2 = 20.8(4) M-circle dot, R-1 = 9.7(2) R-circle dot, R-2 = 8.5(2) R-circle dot, log(L-1/L-circle dot) = 5.152(20), and log (L-2/L-circle dot) = 4.954(19) while the separation of the components is a = 23.4 R-circle dot. 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) x 10(-7) days yr(-1) that can be interpreted in terms of the high-mass transfer (dM/dt = 6.1(5) x 10(-6) M-circle dot yr(-1)) 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.