CAOSP abstracts, Volume: 55, No.: 1, year: 2025

Author(s): Hanna, M.A.; Nakhlawy, A.; Hayman, M.; Amin, M.Y.; Dwidar, H.R.; El-Khamisy, M.A.; Essam, A.
Journal: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 55, no. 1, p. 18-37.
Date: 02/2025
Title: Light curve analysis for the two eclipsing binary stars V869 Car and V2184 Sgr
Keyword(s): binaries: eclipsing, stars: eccentric, apsidal motion, V869 Car, V2184 Sgr
Pages: 18 -- 37
DOI: https://doi.org/10.31577/caosp.2025.55.1.18
NASA ADS Abstract Service: 2025CoSka..55a..18H
Citation:
License: This work is licensed under a Creative Commons Attribution 4.0 International License

Abstract: We present the first light curve analysis for two detached eccentric eclipsing Algol-type binaries V869 Car and V2184 Sgr, using the PHOEBE code. The stars were selected from the PZP catalogue. The light curve for V869 Car is from the OgleII project. For V2184 Sgr, we analyzed two available light curves from the ASAS and the TESS mission. We determined 8 new times of minima for V 2184 Sgr and preliminary orbital and physical parameters for both systems. The analysis shows e, ω(rad) and q_ph equal to 0.070(1), 2.976(52) and 0.951(8) for V869 Car, while 0.4896(5), 5.750(2) and 0.9004(70) for V2184 Sgr. The analysis shows that both stars are of late F-Spectral types in which one may expect magnetic activity or star spots due to their convective envelopes.