AAVSO: American Association of Variable Star Observers

Evidence for High Eccentricity and Apsidal Motion in the Detached Eclipsing Binary GSC 04052-01378

Volume 45 number 2 (2017)

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Riccardo Furgoni
Keyhole Observatory, Via Fossamana 86 - San Giorgio di Mantova (MN), Italy, riccardo.furgoni@gmail.com
Gary Billings
Monument Hill Observatory P.O. Box 263, Rockyford, Alberta, Canada T0J 2R0, obs681@gmail.com

Abstract

We observed the recently discovered eccentric eclipsing binary GSC 04052-01378 in order to improve the light curve parameters and to find further evidence of its probable high eccentricity and of apsidal motion. Furthermore, we propose a basic stellar model that fits very well the observations of our dataset and where the eccentricity is found to be e = 0.538(6), which corresponds to an high value among this group of binaries.