Hunting for overlooked eccentric eclipsing binaries from ASAS-3 survey

•New non-zero eccentricity eclipsing binaries in ASAS survey•Possible tidally-excited oscillations in eclipsing binaries We present the results of searching for new candidates of eclipsing binaries with eccentric orbits in the ASAS Catalog of Variable Stars (ACVS) using publicly available data from...

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Veröffentlicht in:New astronomy 2022-11, Vol.97, p.101875, Article 101875
Hauptverfasser: Khalikova, A.V., Gaynullina, E.R., Serebryanskiy, A.V.
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Sprache:eng
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Zusammenfassung:•New non-zero eccentricity eclipsing binaries in ASAS survey•Possible tidally-excited oscillations in eclipsing binaries We present the results of searching for new candidates of eclipsing binaries with eccentric orbits in the ASAS Catalog of Variable Stars (ACVS) using publicly available data from the All Sky Automated Survey (ASAS) and the Transiting Exoplanet Survey Satellite (TESS). Unsupervised machine learning techniques were applied to find anomalies among the light curves of eclipsing binaries. The light curves modeling were performed using JKTEBOP code. The pulsation analysis was done with FAMIAS. We identified 19 new eclipsing binary candidates with non-zero eccentricities in the ACVS, including 10 candidates with eccentricities e≥0.1. Estimates of eccentricities are given. We also report on possible presence of the small-amplitude stellar pulsations at least in two of the reported systems.
ISSN:1384-1076
1384-1092
DOI:10.1016/j.newast.2022.101875