Absolute parameters and period variation in a semidetached eclipsing variable V2247 Cyg
M. A. Burlak (1), I. M. Volkov (1, 2), N. P. Ikonnikova (1) ((1), - Sternberg Astronomical Institute, Lomonosov Moscow State University, (2) -, Institute of Astronomy of the Russian Academy of Sciences)
TL;DR
This study determines the physical parameters and period variations of the semi-detached eclipsing binary V2247 Cyg using photometric and spectroscopic data, revealing a Roche lobe filling component and period changes.
Contribution
It provides the first detailed absolute parameters and period analysis of V2247 Cyg, a poorly studied Algol-type binary, using combined photometric and spectroscopic observations.
Findings
Semi-detached configuration with Roche lobe filling component
Mass ratio, inclination, temperatures, and radii determined
Period variations observed in ETV diagram
Abstract
We aim to determine the absolute parameters of the components of a poorly studied Algol-type eclipsing binary V2247 Cyg. The data analysis is based on our numerous precise UBVRcIc photometric observations and low resolution spectra. The photometric solution reveals a semi-detached configuration with a less-massive component filling its Roche lobe. The mass ratio, inclination, effective temperatures, and fractional radii were determined. Masses and radii of the components were obtained by a non-direct method. The Eclipse Time Variation (ETV) diagram revealed the period changes.
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Taxonomy
TopicsStellar, planetary, and galactic studies · Astrophysics and Star Formation Studies