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Convective Overshooting in Low-mass Stars Using the k-omega Model
Guo F(郭飞)1,2,3; Li Y(李焱)1,2,3,4
发表期刊ASTROPHYSICAL JOURNAL
2019-07-10
卷号879期号:2页码:6
DOI10.3847/1538-4357/ab262f
产权排序第1完成单位
收录类别SCI
关键词convection stars: evolution stars: low-mass
摘要

The mixing of convective overshoot is quite uncertain in low-mass stars. To study the mixing in the convective core and beyond the convective boundary for low-mass stars, we use the k-omega model, which is proposed by Li. We determine that the distance of the overshooting region is about 0.072H(p) in the 1.3 M-circle dot star. There are two parts in the overshooting region, one is the completely mixing region of about 0.027H(p), and the other is the partial mixing region of about 0.045H(p). Next, we study the semiconvection for low-mass stars. We find that the semiconvection near the convective core boundary can be removed when we use the k-omega model. Then, we calibrate the f(ov) for classical overshooting by using the k-omega model. As a result, we find that a suitable value of f(ov) is about 0.008 for the mass range of 1.0-1.8 M-circle dot stars.

资助项目NSFC of China[11333006] ; NSFC of China[11521303]
项目资助者NSFC of China[11333006, 11521303]
语种英语
学科领域天文学 ; 恒星与银河系 ; 恒星物理学 ; 恒星形成与演化
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS记录号WOS:000474921300002
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]STELLAR EVOLUTION
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被引频次:6[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/114a53/20531
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Guo F(郭飞)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, People's Republic of China
2.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China
4.Key Laboratory for Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, People's Republic of China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
推荐引用方式
GB/T 7714
Guo F,Li Y. Convective Overshooting in Low-mass Stars Using the k-omega Model[J]. ASTROPHYSICAL JOURNAL,2019,879(2):6.
APA Guo F,&Li Y.(2019).Convective Overshooting in Low-mass Stars Using the k-omega Model.ASTROPHYSICAL JOURNAL,879(2),6.
MLA Guo F,et al."Convective Overshooting in Low-mass Stars Using the k-omega Model".ASTROPHYSICAL JOURNAL 879.2(2019):6.
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