CAOSP abstracts, Volume: 55, No.: 3, year: 2025

Author(s): Akar, F.; Baştürk, Ö.; Esmer, E.M.; Sertkan, E.; Güler, B.; Bayram, M.B.
Journal: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 55, no. 3, p. 286-294.
Date: 04/2025
Title: Orbital analysis of additional bodies around eclipsing binaries HT Vir and MR Del
Keyword(s): binaries: eclipsing, stars: individual (HT Vir, MR Del), techniques: astrometry, eclipse timing
Pages: 286 -- 294
DOI: https://doi.org/10.31577/caosp.2025.55.3.286
NASA ADS Abstract Service: 2025CoSka..55c.286A
Citation:
License: This work is licensed under a Creative Commons Attribution 4.0 International License

Abstract: We analyze the orbital characteristics of additional bodies suggested to exist around the eclipsing binaries HT Vir and MR Del by utilizing both astrometric and eclipse timing data, with recent timing data primarily from TESS and astrometric data from Gaia. Our analysis shows that the available timing data for HT Vir closely follows the ETV trend induced by the companion suggested by the astrometric solution. For MR Del, we derived an orbital solution indicating a companion with an approximate semi-major axis of 150 AU. We also updated the ETV analysis for MR Del, finding a longer-period variation compared to previous studies.