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A note on the mixing length theory and massive star evolution
Deng, LC; Xiong, DR
2001-02-01
发表期刊CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
卷号1期号:1页码:50-56
摘要In this paper, we investigate the problem of supersonic convection caused by the application of the usual Mixing Length Theory (MLT), and give a modification to the original expression of the MLT. In the case of the usual MLT, a zone of supersonic convection exists when the stellar model goes into yellow-red supergiant phase. When the modification is applied, the models of late type supergiants possess shallower convective envelopes for a given temperature compared with the normal formalism of the MLT. Therefore the stellar models made with our new formalism move to lower effective temperature by 100-400 K depending on the luminosity of the star. Such a modification does not affect the convective envelope structure of lower luminosity late type stars, as both expressions of the MLT give the same result. in these stars.
关键词Convection Stars : Supergiants Stars : Massive Stars Stars : Evolution
收录类别SCI
语种英语
WOS记录号WOS:000172248600006
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8614
专题光学天文研究部
作者单位1.Chinese Acad Sci, Beijing Astron Observ, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
4.CAS Peking Univ, Joint Beijing Astrophys Ctr, Beijing 100871, Peoples R China
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Deng, LC,Xiong, DR. A note on the mixing length theory and massive star evolution[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2001,1(1):50-56.
APA Deng, LC,&Xiong, DR.(2001).A note on the mixing length theory and massive star evolution.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,1(1),50-56.
MLA Deng, LC,et al."A note on the mixing length theory and massive star evolution".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 1.1(2001):50-56.
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