金牛座、蛇夫座中分子云的热性质和年轻星体的演化状态

北京大学学报（自然科学版）

金牛座、蛇夫座中分子云的热性质和年轻星体的演化状态

吴京文,吴月芳

北京大学地球物理学系，中国科学院-北京大学联合北京天体物理中心，北京, 100871

收稿日期:1998-09-28 出版日期:1999-09-20 发布日期:1999-09-20

Thermal Characters of Molecular Clouds and Evolutionary States of Young Stars in the Taurus and Ophiuchus

WU Jingwen, WU Yuefang

Department of Geophysics, Peking University, Academy of Sciences of China-Peking University joint Beijing Astrophysics Center, Beijing, 100871

Received:1998-09-28 Online:1999-09-20 Published:1999-09-20

摘要/Abstract

摘要： 运用CO分子谱线及红外天文卫星资料，求出了金牛座、蛇夫座核心2个恒星形成区的气体运动温度T_k和尘埃温度T_d，验证了尘埃加热分子云的基本条件；着重探讨了用T_d参量比较年轻星体演化状态的方法，得出蛇夫座核心区恒星比金牛座恒星年轻的初步结论。

关键词: 星际分子, 红外辐射, 星际介质动力学

Abstract: Gas kinetic temperature T_k and dust temperature T_d were obtained for the clouds in Ophiuchus and Taurus based on CO observation as well as IRAS data. The requested T_d>T_k for dust collision heating mechanism has been tested. The relationship between T_d, T_bol and evolutionary states has been analyzed. Results show that young stars in Ophiuchus core are younger than in those of Taurus, and IRAS colour temperature can be used to estimate the evolutionary states of young stars as a whole.

Key words: interstellar molecular, infrared radiation, dynamics of interstellar molecular

中图分类号:

P155

吴京文,吴月芳. 金牛座、蛇夫座中分子云的热性质和年轻星体的演化状态[J]. 北京大学学报（自然科学版）.

WU Jingwen,WU Yuefang. Thermal Characters of Molecular Clouds and Evolutionary States of Young Stars in the Taurus and Ophiuchus[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

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链接本文: https://xbna.pku.edu.cn/CN/

https://xbna.pku.edu.cn/CN/Y1999/V35/I5/665

[1]	蔡锴,吴月芳. 外向流喷流驱动的模型研究进展[J]. 北京大学学报（自然科学版）, 2001, 37(1): 121-127.
[2]	蔡锴,吴月芳. 外向流喷流驱动的模型研究进展[J]. 北京大学学报（自然科学版）, 2001, 37(1): 121-127.