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题名: A note on the mixing length theory and massive star evolution
作者: Deng, LC; Xiong DaRun(熊大闰)
刊名: CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
出版日期: 2001-02-01
卷号: 1, 期号:1, 页码:50-56
关键词: convection ; stars : supergiants ; stars : massive stars ; stars : evolution
学科分类: Astronomy & Astrophysics
文章类型: Article
英文摘要: 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.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: TURBULENT CONVECTION ; PULSATIONAL STABILITY ; STELLAR EVOLUTION ; VARIABLE-STARS ; OSCILLATIONS ; MODEL ; DIAGRAM
收录类别: SCI
语种: 英语
WOS记录号: WOS:000172248600006
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/11194
Appears in Collections:熊大闰_期刊论文

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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

Recommended Citation:
Deng, LC; Xiong, DR.A note on the mixing length theory and massive star evolution,CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2001,1(1):50—56
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