Significant uncertainties from calibrating overshooting with eclipsing binary systems

Abstract

The precise measurement of the masses and radii of stars in eclipsing binary systems provides a window into uncertain processes in stellar evolution, especially mixing at convective boundaries. Recently, these data have been used to calibrate models of convective overshooting in the cores of main sequence stars. In this study we have used a small representative sample of eclipsing binary stars with $1.25\le M/{\text{M}}_{\odot }<4.2$ to test how precisely this method can constrain the overshooting and whether the data support a universal stellar mass--overshooting relation. We do not recover the previously reported stellar mass dependence for the extent of overshooting and in each case we find there is a substantial amount of uncertainty, that is, the same binary pair can be matched by models with different amounts of overshooting. Models with a moderate overshooting parameter $0.013\le f_{\text{os}}\le 0.014$ (using the scheme from Herwig et al. 1997) are consistent with all eight systems studied. Generally, a much larger range of $f_{\text{os}}$ is suitable for individual systems. In the case of main sequence and early post-main sequence stars, large changes in the amount of overshooting have little effect on the radius and effective temperature, and therefore the method is of extremely limited utility.

Accepted for publication in A&A

References in corpus (25)

• The chemical composition of the Sun
• Accurate masses and radii of normal stars: modern results and applications
• An eclipsing binary distance to the Large Magellanic Cloud accurate to 2 per cent
• The Victoria-Regina Stellar Models: Evolutionary Tracks and Isochrones for a Wide Range in Mass and Metallicity that Allow for Empirically Constrained Amounts of Convective Core Overshooting
• Gravity darkening in rotating stars
• The Effect of Stellar Rotation on Colour-Magnitude Diagrams: On the apparent presence of multiple populations in intermediate age stellar clusters
• Low-temperature gas opacity - AESOPUS: a versatile and quick computational tool
• Evolution and Nucleosynthesis of Extremely Metal Poor & Metal-Free Low- and Intermediate-Mass Stars I: Stellar Yield Tables and the CEMPs
• Testing convective-core overshooting using period spacings of dipole modes in red giants
• The dependence of convective core overshooting on stellar mass: Additional binary systems and improved calibration
• The dependence of convective core overshooting on stellar mass: semi-empirical determination using the diffusive approach with two different element mixtures
• Uncertainties on near-core mixing in red-clump stars: effects on the period spacing and on the luminosity of the AGB bump
• Physical parameters and the projection factor of the classical Cepheid in the binary system OGLE-LMC-CEP-0227
• Confronting uncertainties in stellar physics: calibrating convective overshooting with eclipsing binaries
• The treatment of mixing in core helium burning models -- II. Constraints from cluster star counts
• Kepler red-clump stars in the field and in open clusters: constraints on core mixing
• The treatment of mixing in core helium burning models -- III. Suppressing core breathing pulses with a new constraint on overshoot
• Orbital and physical parameters of eclipsing binaries from the ASAS catalogue - VIII. The totally-eclipsing double-giant system HD 187669
• Absolute dimensions of eclipsing binaries. XXVIII. BK Pegasi and other F-type binaries: Prospects for calibration of convective core overshoot
• The Araucaria Project: A study of the classical Cepheid in the eclipsing binary system OGLE LMC562.05.9009 in the Large Magellanic Cloud
• On the necessity of composition-dependent low-temperature opacity in metal-poor AGB stars
• Calibrating convective-core overshooting with eclipsing binary systems. The case of low-mass main-sequence stars
• Convective overshoot mixing in stellar interior models
• Overshooting calibration and age determination from evolved binary system
• Calibrating the updated overshoot mixing model on eclipsing binary stars: HY Vir, YZ Cas, X2 Hya & VV Crv

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