2025MNRAS.543.2958C


Query : 2025MNRAS.543.2958C

2025MNRAS.543.2958C - Mon. Not. R. Astron. Soc., 543, 2958-2973 (2025/November-1)

Selected β Cephei pulsators in eclipsing binaries.

CAKIRLI O., HOYMAN B., OZDARCAN O. and BILIR S.

Abstract (from CDS):

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.

Abstract Copyright: © The Author(s) 2025. Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): binaries: close - binaries: eclipsing - stars: fundamental parameters - stars: oscillations - stars: variables: general

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 * psi02 Ori bC* 05 26 50.2293232104 +03 05 44.422154160 3.45 4.398 4.611     B2IV 218 0
2 HD 254346 * 06 16 57.3220342426 +22 11 41.960903468 9.72 10.13 9.74     B2:III: 23 0
3 IC 2395 OpC 08 42 09.0 -48 05 14     4.6     ~ 120 1
4 HD 74455 ** 08 42 16.1925159528 -48 05 56.748130241 4.39 5.288 5.468 7.877 7.074 B2/3IV/V 125 0
5 V* EK Cru EB* 12 02 58.4661384144 -62 40 19.225913952 7.37 8.10 8.11     B1V 36 0
6 HD 120734 SB* 13 51 55.7388492384 -36 37 24.836269800   9.13 8.54   7.771 G0V+G0V 87 0
7 CPD-41 7746 Y*O 16 54 29.4909163992 -41 39 14.951295468 8.755 9.406 9.192   8.821 ~ 25 0
8 V* PP Lac EB* 22 42 38.6615740392 +53 25 02.835844320   12.65 11.85 10.648 10.232 ~ 57 0

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