Year: 2025
Type: article
Abstract: Eclipsing binary systems are crucial for studying stellar structure and evolution. This research aims to investigate the orbital period changes of the eclipsing binary system PV Comae Berenices through observations in the visual wavelength band (551 nm) at Thai National Observatory on April 15-16, 2022. The study found that the times of minimum light were 2459685.272 and 2459686.166, respectively. When analyzing these data together with historical data from 2002 to 2020, a new linear ephemeris equation was calculated. The O–C diagram analysis revealed a clear downward parabolic pattern, indicating a continuous decrease in the orbital period with a period change rate of –4.55 × 10–2 seconds per year. This decrease caused by mass transfer between the two stars or angular momentum loss through the magnetic braking mechanism. The findings from this study will enhance our understanding of the evolution of PV Comae Berenices binary systems.
Authors: Lakhom, Ronnachai, Panpiboon, Patapong
Language: Thai
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7219980306