Work

Selected β Cephei pulsators in eclipsing binaries

Year: 2025

Type: article

Abstract: 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.

Source: Monthly Notices of the Royal Astronomical Society

DOI: 10.1093/mnras/staf1623

Authors: Ö Çakırlı, B Hoyman, O Özdarcan, S Bilir

Institutions: Ege University, Istanbul University, Atatürk University

Language: English

Topic: Stellar, planetary, and galactic studies

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,046

Funders: European Space Agency, Istanbul Üniversitesi, Mitutoyo Association for Science and Technology