# TESTING THE CORE OVERSHOOT MIXING DESCRIBED BY A TURBULENT CONVECTION MODEL ON THE ECLIPSING BINARY STAR HY VIR

@article{Zhang2012TESTINGTC,
title={TESTING THE CORE OVERSHOOT MIXING DESCRIBED BY A TURBULENT CONVECTION MODEL ON THE ECLIPSING BINARY STAR HY VIR},
author={Q. S. Zhang},
journal={The Astrophysical Journal},
year={2012},
volume={761}
}
• Q. S. Zhang
• Published 1 November 2012
• Physics
• The Astrophysical Journal
Helioseismic investigation has suggested applying turbulent convection models (TCMs) to convective overshoot. Using the turbulent velocity in the overshoot region determined by a TCM, one can deal with overshoot mixing as a diffusion process, which leads to incomplete mixing. It has been found that this treatment can improve solar sound speed and Li depletion in open clusters. In order to investigate whether the TCM can be applied to overshoot mixing outside the stellar convective core, new…
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## References

SHOWING 1-10 OF 26 REFERENCES
TURBULENT CONVECTION MODEL IN THE OVERSHOOTING REGION. I. EFFECTS OF THE CONVECTIVE MIXING IN THE SOLAR OVERSHOOTING REGION
• Physics, Geology
• 2012
The overshooting in the framework of the turbulent convection model is investigated in the solar overshooting region. The overshooting mixing is treated as a diffusive process. It is found that the
Turbulence properties in the solar convection envelope: properties of the overshooting regions ⁄
• Physics
• 2009
We apply the turbulent convection model (TCM) to investigate properties of turbulence in the solar convective envelope, especially in overshooting regions. The results show TCM gives negative
Testing turbulent convection theory in solar models – I. Structure of the solar convection zone
• Physics, Environmental Science
• 2007
Turbulent convection models (TCMs) based on hydrodynamic moment equations are compared with the classical mixing-length theory (MLT) in solar models. The aim is to test the effects of some physical
A more realistic representation of overshoot at the base of the solar convective envelope as seen by helioseismology
• Physics, Geology
• 2011
The stratification near the base of the Sun’s convective envelope is governed by processes of convective overshooting and element diffusion, and the region is widely believed to play a key role in
TURBULENT CONVECTION MODEL IN THE OVERSHOOTING REGION. II. THEORETICAL ANALYSIS
• Physics
• 2012
Turbulent convection models (TCMs) are thought to be good tools to deal with the convective overshooting in the stellar interior. However, they are too complex to be applied to calculations of
The diffusive overshooting approach to Li abundance in clusters
Helioseimic investigation shows that convective overshooting can penetrate 0.37H(P) to the location where the temperature is 2.5 x 10(6) K, which is the typical temperature of the reaction Li-7(p,
A k–ω MODEL FOR TURBULENTLY THERMAL CONVECTION IN STARS
Both observations and numerical simulations show that stellar convective motions are composed of semi-regular flows of convective rolling cells and a fully developed turbulence. Although the
Does convective core overshooting depend on stellar mass? Tests using double-lined eclipsing binaries
Aims. We have selected 13 double-line eclipsing binary systems (DLEBS), strategically positioned in the HR diagram, to infer the mass dependence of the core overshooting parameter αov. Methods. In
Convective Overshooting in Stellar Interior Models
• Physics
• 1973
ABS>The question of overshooting from interior convective cores in stellar models is examined in the framework of a simplified nonlocal mixing- length model for convection. The most important results
The structure of the solar convective overshooting zone
• Physics
• 2001
Using a non-local theory of convection, we calculated the structure of the solar convection zone, paying special attention to the detailed structure of the lower overshooting zone. Our results show