We present an extension of the BEER model for eccentric binaries - eBEER, approximating the BEaming, Ellipsoidal and Reflection effects by harmonic series of the Keplerian elements of their orbit. As such, it can be a tool for fast processing of light curves for detecting non-eclipsing eccentric binary systems. To validate the applicability of the eccentric model and its approximations, we applied eBEER to the Kepler light curves, identified a sample of bright non-eclipsing binary candidates, and followed three of them with the Wise observatory eShel spectrograph. After confirming the three systems are indeed radial-velocity (RV) binaries, we fitted the light curves and the RV data with PHOEBE, a detailed numerical light-curve and RV model, and showed that the PHOEBE derived parameters are similar to those obtained by the eBEER approximation.
@article{arxiv.2007.13773,
title = {BEER analysis of Kepler and CoRoT light curves. V. eBEER: Extension of the Algorithm to Eccentric Binaries},
author = {M. Engel and S. Faigler and S. Shahaf and T. Mazeh},
journal= {arXiv preprint arXiv:2007.13773},
year = {2020}
}
Comments
Accepted 2020 July 16. Received 2020 July 15; in original form 2019 October 16. 21 pages, 2 figures