THE LOW-MASS INTERACTING BINARY SYSTEM OO Aql REVISITED: A NEW QUADRUPLE SYSTEM
Articles > Article · 2013
Authors: T. İçli, D. Koçak, G. Ç. Boz, K. Yakut
The Astronomical Journal, International, WoS, 2013, vol 145, pp 127-127
DOI: 10.1088/0004-6256/145/5/127
Summary
In this study we present photometric and spectroscopic variation analysis and an orbital period study of a low-mass interacting system OO Aql. Simultaneous solution of the light and radial velocity curves provides us with the determination of a new set of stellar physical parameters for the primary and the secondary companion, M 1 = 1.05(2) M ☉ , M 2 = 0.89(2) M ☉ , R 1 = 1.38(2) R ☉ , R 2 = 1.28(2) R ☉ , log ( L 1 / L ☉ ) = 0.258, and log ( L 2 / L ☉ ) = 0.117, and the separation of the components was determined to be a = 3.333(16) R ☉ . Newly obtained parameters yield the distance of the system as 136(8) pc. Analyses of the mid-eclipse times indicate a period increase of yr that can be interpreted in terms of the mass transfer ( dM / dt ) = 5 × 10 −8 M ☉ yr −1 from the less massive component to the more massive component. Our new solution confirmed that OO Aql is a multiple system in the form of AB + C + D. We found initial astrophysical parameters for the component of the system and its current age to be 8.6 Gyr using a non-conservative stellar evolution model (EV-TWIN code).