CAOSP abstracts, Volume: 50, No.: 2, year: 2020

Author(s): Hajdu, T.; Borkovits, T.; Forgács-Dajka, E.; Sztakovics, J.; Marschalkó, G.; Kutrovátz, G.
Journal: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 50, no. 2, p. 421-425.
Date: 3/2020
Title: Hierarchical triple star systems towards the Galactic Bulge through OGLE's eye
Keyword(s): binaries: close, binaries: eclipsing, methods: numerical
Pages: 421 -- 425
DOI: https://doi.org/10.31577/caosp.2020.50.2.421
NASA ADS Abstract Service: 2020CoSka..50..421H
Citation:
License: This work is licensed under a Creative Commons Attribution 4.0 International License

Abstract: We report the result of eclipse timing variation (ETV) analyses of OGLE-IV eclipsing binaries (EBs). We have identified around 1000 potential triple (or multiple) system candidates and, in addition, we determined the orbital parameters and we carried out statistical analyses of the properties of the candidates. We found that (i) the distribution of the outer eccentricity has a maximum around e₂=0.3; (ii) in most cases the estimated outer mass ratio is lower than q₂∼0.5. Besides, we also present some systems that deserve special attention.