Back to Volume
Paper: Distance Determination to the Eclipsing Binary System OGLE-LMC-ECL-25658
Volume: 514, Stellar Populations and the Distance Scale
Page: 119
Authors: Elgueta, S. S.; Graczyk, D.; Gieren, W.
Abstract: In the present work, we show the procedure to obtain the distance, as well as the optical and physical parameters of the eclipsing binary system OGLE-LMC-ECL-25658, which is located in a very “exotic” region of the Large Magellanic Cloud (LMC). Using multi-color photometry and high resolution spectroscopy we analyzed its light and radial velocity curves simultaneously using the Wilson–Devinney code (version 2007). Angular sizes can be obtained using the infrared calibration given by Di Benedetto (2005), which relates the V-band surface brightness and (V–K) color. Thus, we computed a distance modulus of (mM) = 18.452 ± 0.023 (statistical) ± 0.046 (systematic) mag for the system. After accounting for the geometric correction, the barycenter distance to the LMC is dLMC = 50.30 ± 0.53 (stat.) kpc, which is in agreement with the earlier result of Pietrzy´nski et al. (2013).
Back to Volume