Selected β Cephei pulsators in eclipsing binaries
Articles > Article · 2025
Authors: Esin SİPAHİ KILIÇ, B Hoyman, Orkun ÖZDARCAN, S Bilir
Monthly Notices of the Royal Astronomical Society, International, WoS, 2025, vol 543, pp 2958-2973
Summary
ABSTRACT We present a comprehensive analysis of five eclipsing binary systems containing $\beta$ Cephei-type pulsating components. These systems were identified using high-precision Transiting Exoplanet Survey Satellite photometry and complemented by high-resolution spectroscopic data from multiple instruments (e.g. HARPS, FEROS, UVES). For each target, we derived fundamental parameters including masses, radii, effective temperatures, and metallicities through a combined analysis of light curves and radial velocity data. The atmospheric parameters were determined via spectral disentangling and Markov Chain Monte Carlo-based fitting techniques. Absolute parameters were used to position components on the Hertzsprung–Russell diagram, and evolutionary status was assessed using mesa/MIST stellar tracks. Frequency analysis revealed multiple significant pulsation modes in all systems. Our study increases the number of well-characterized $\beta$ Cephei pulsators in binaries and provides high-precision benchmarks for stellar evolution and asteroseismology.