Publication details

Study of five eccentric eclipsing binary systems


KOLÁŘ Jakub ZEJDA Miloslav AUER R. F.

Year of publication 2023
Type Article in Periodical
Magazine / Source New Astronomy
MU Faculty or unit

Faculty of Science

Keywords Eclipsing binary; Light curve; Radial velocity curve; Apsidal motion; Eccentricity; Large Magellanic Cloud
Description In this paper we present the comprehensive analysis of five binary systems: GX Lac, TT Lyr, OGLE LMC-ECL-7641, OGLE LMC-ECL-17660, and OGLE LMC-ECL-17411. With new photometric observations combined with other available data mostly from TESS, MACHO, and OGLE, we calculated new minima timings and study the O - C diagrams. We fitted the light curves and radial velocity curves using PHOEBE software and obtain absolute parameters of these objects. All five binary stars are eccentric. We present the first analysis of TT Lyr, which reveals its nonzero eccentricity. The calculated distance of OGLE LMC-ECL-7641 indicates that this possibly triple system could be located in the Magellanic Stream.

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