YNAO OpenIR  > 太阳物理研究组
CALIBRATING THE UPDATED OVERSHOOT MIXING MODEL ON ECLIPSING BINARY STARS: HY Vir, YZ Cas, chi(2) Hya, and VV Crv
Meng Y(蒙盈)1,2; Zhang QS(张钱生)1,3
Source PublicationASTROPHYSICAL JOURNAL
2014-06-01
Volume787Issue:2
DOI10.1088/0004-637X/787/2/127
Contribution Rank第1完成单位
Indexed BySCI
KeywordBinaries: Eclipsing Convection Stars: Evolution
Abstract

Detached eclipsing binary stars with convective cores provide a good tool to investigate convective core overshoot. It has been performed on some binary stars to restrict the classical overshoot model which simply extends the boundary of the fully mixed region. However, the classical overshoot model is physically unreasonable and inconsistent with helioseismic investigations. An updated model of overshoot mixing was established recently. There is a key parameter in the model. In this paper, we use observations of four eclipsing binary stars, i.e., HY Vir, YZ Cas, chi(2) Hya, and VV Crv, to investigate a suitable value for the parameter. It is found that the value suggested by calibrations on eclipsing binary stars is the same as the value recommended by other methods. In addition, we have studied the effects of the updated overshoot model on the stellar structure. The diffusion coefficient of convective/overshoot mixing is very high in the convection zone, then quickly decreases near the convective boundary, and exponentially decreases in the overshoot region. The low value of the diffusion coefficient in the overshoot region leads to weak mixing and a partially mixed overshoot region. Semi-convection, which appears in the standard stellar models of low-mass stars with convective cores, is removed by partial overshoot mixing.

Funding ProjectProgram 973[2011CB811403] ; National Natural Science Foundation of China (NSFC)[11303087] ; National Natural Science Foundation of China (NSFC)[11273055] ; National Natural Science Foundation of China (NSFC)[11333007] ; CAS[Y1ZX011007] ; CAS[Y3CZ051005] ; West Light Foundation of the Chinese Academy of Sciences
Funding OrganizationProgram 973[2011CB811403] ; National Natural Science Foundation of China (NSFC)[11303087, 11273055, 11333007] ; CAS[Y1ZX011007, Y3CZ051005] ; West Light Foundation of the Chinese Academy of Sciences
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星物理学 ; 恒星形成与演化
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
Archive Date2014-05-19
WOS IDWOS:000336246700032
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordTURBULENT CONVECTION MODEL ; MASSIVE STARS ; ABSOLUTE PROPERTIES ; STELLAR EVOLUTION ; NONLOCAL CONVECTION ; HELIOSEISMOLOGY ; CONSTRAINTS ; SERPENTIS ; OPACITIES ; INTERIOR
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6251
Collection太阳物理研究组
中国科学院天体结构与演化重点实验室
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, China
2.University of Chinese Academy of Sciences, Beijing 100039, China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Meng Y,Zhang QS. CALIBRATING THE UPDATED OVERSHOOT MIXING MODEL ON ECLIPSING BINARY STARS: HY Vir, YZ Cas, chi(2) Hya, and VV Crv[J]. ASTROPHYSICAL JOURNAL,2014,787(2).
APA Meng Y,&Zhang QS.(2014).CALIBRATING THE UPDATED OVERSHOOT MIXING MODEL ON ECLIPSING BINARY STARS: HY Vir, YZ Cas, chi(2) Hya, and VV Crv.ASTROPHYSICAL JOURNAL,787(2).
MLA Meng Y,et al."CALIBRATING THE UPDATED OVERSHOOT MIXING MODEL ON ECLIPSING BINARY STARS: HY Vir, YZ Cas, chi(2) Hya, and VV Crv".ASTROPHYSICAL JOURNAL 787.2(2014).
Files in This Item:
File Name/Size DocType Version Access License
CALIBRATING THE UPDA(558KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Meng Y(蒙盈)]'s Articles
[Zhang QS(张钱生)]'s Articles
Baidu academic
Similar articles in Baidu academic
[Meng Y(蒙盈)]'s Articles
[Zhang QS(张钱生)]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Meng Y(蒙盈)]'s Articles
[Zhang QS(张钱生)]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: CALIBRATING THE UPDATED OVERSHOOT MIXING MODEL ON ECLIPSING BINARY STARS_ HY Vir, YZ Cas, χ2 Hya, and VV Crv.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.