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题名: A Note on the Supersonic Convection in Stellar Atmospheres
作者: Xiong, Da-Run ; Deng, Li-Cai
刊名: Chinese Astronomy and Astrophysics
出版日期: 2011
卷号: 35, 期号:4, 页码:382-385
学科分类: Astronomy & Astrophysics
英文摘要: By using a non-local convection theory, both the local and nonlocal convective envelope models of evolutionary series of stars with masses from 1 to 30 solar masses are calculated. The problem of supersonic convection is reviewed. The results show that the convective velocities in the stellar atmosphere are seriously overestimated by the local mixing-length theory. Convection is strongly supersonic in the atmospheres of yellow giant and super-giants, while the local mixing-length theory is used. However, it becomes subsonic for most stars when convection returns to the normal nonlocal treatment. Convection velocities increase with increase of luminosities of stars. There is still weak supersonic convection in few red and yellow giant and super-giants. It is suspected whether this supersonic convection in stellar atmospheres is true.
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/11220
Appears in Collections:熊大闰_期刊论文

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Xiong, Da-Run; Deng, Li-Cai.A Note on the Supersonic Convection in Stellar Atmospheres,Chinese Astronomy and Astrophysics,2011,35(4 ):382-385
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