Article 2025 · 0 citations

Selected <i>β </i>Cephei pulsators in eclipsing binaries

Cakirli, O., Hoyman, B., Ozdarcan, O., Bilir, S.

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.

Keywords

binaries: close binaries: eclipsing stars: fundamental parameters stars: oscillations stars: variables: general BLANKETED MODEL ATMOSPHERES B-STARS PULSATIONAL INSTABILITY BOLOMETRIC CORRECTIONS EFFECTIVE TEMPERATURES CLASSICAL CEPHEID MESA ISOCHRONES RADIAL-VELOCITY TESS MISSION LIGHT CURVES

WoS Categories

Astronomy & Astrophysics

Citation

Journal: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Year: 2025
Volume: 543
Issue: 3
Pages: 2958-2973
ISSN: 0035-8711
eISSN: 1365-2966
DOI: 10.1093/mnras/staf1623
WoS UID: WOS:001592283700001

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