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

doi:10.1088/0004-637X/761/2/153

YNAO OpenIR > 恒星物理研究组

	TESTING THE CORE OVERSHOOT MIXING DESCRIBED BY A TURBULENT CONVECTION MODEL ON THE ECLIPSING BINARY STAR HY VIR
	Zhang QS(张钱生)1,2,3 ; Zhang, QS (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊	ASTROPHYSICAL JOURNAL
	2012-12-20
卷号	761 期号:2 页码:153-
DOI	10.1088/0004-637X/761/2/153
产权排序	第1完成单位
收录类别	SCI
关键词	Convection Stars: Individual (Hy Vir) Turbulence
摘要	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 observations of the eclipsing binary star HY Vir are adopted to calibrate the overshoot mixing parameter. The main conclusions are as follows: (1) the solar TCM parameters and overshoot mixing parameter are also suitable for the eclipsing binary system HY Vir, (2) the incomplete mixing results in a continuous profile of hydrogen abundance, and (3) the e-folding length of the region, in which the hydrogen abundance changes due to overshoot mixing, increases during stellar evolution.
项目资助者	National Natural Science Foundation of China [10973035] ; Science Foundation of Yunnan Observatory [Y0ZX011009, Y1ZX011007] ; Science Foundation of Yunnan Province [2010CD112] ; Chinese Academy of Sciences [KJCX2-YW-T24]
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-637X
URL	查看原文
归档日期	2013-08-22
WOS记录号	WOS:000312090300072
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	NONLOCAL CONVECTION ; STELLAR EVOLUTION ; MASSIVE STARS ; SOLAR MODELS ; DIFFUSION ; ZONE ; HELIOSEISMOLOGY ; OPACITIES ; ENVELOPE
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/5211
专题	恒星物理研究组中国科学院天体结构与演化重点实验室
通讯作者	Zhang, QS (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China.
作者单位	1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, China (QSZ) 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China 3.Graduate School of Chinese Academy of Sciences, Beijing 100039, China
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Zhang QS,Zhang, QS . TESTING THE CORE OVERSHOOT MIXING DESCRIBED BY A TURBULENT CONVECTION MODEL ON THE ECLIPSING BINARY STAR HY VIR[J]. ASTROPHYSICAL JOURNAL,2012,761(2):153-.
APA	Zhang QS,&Zhang, QS .(2012).TESTING THE CORE OVERSHOOT MIXING DESCRIBED BY A TURBULENT CONVECTION MODEL ON THE ECLIPSING BINARY STAR HY VIR.ASTROPHYSICAL JOURNAL,761(2),153-.
MLA	Zhang QS,et al."TESTING THE CORE OVERSHOOT MIXING DESCRIBED BY A TURBULENT CONVECTION MODEL ON THE ECLIPSING BINARY STAR HY VIR".ASTROPHYSICAL JOURNAL 761.2(2012):153-.

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