| 金牛座、蛇夫座中分子云的热性质和年轻星体的演化状态 |
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| 引用本文： | 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),1999,35(5):665-671. |
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| 作者姓名： | 吴京文 吴月芳 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金;19773002; |
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| 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Tk和尘埃温度Td，验证了尘埃加热分子云的基本条件；着重探讨了用Td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。
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| 关 键 词： | 星际分子 红外辐射 星际介质动力学 |
| 收稿时间： | 1998-09-28 |
Thermal Characters of Molecular Clouds and Evolutionary States of Young Stars in the Taurus and Ophiuchus |
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| 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,1999,35(5):665-671. |
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| Authors: | WU Jingwen WU Yuefang |
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| Institution: | Department of Geophysics, Peking University, Academy of Sciences of China-Peking University joint Beijing Astrophysics Center, Beijing, 100871 |
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| 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 stat es has been analyzed. Results show that young stars in Ophiuchus core are younge r than in those of Taurus, and IRAS colour temperature can be used to estimate t he evolutionary states of young stars as a whole. |
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| Keywords: | interstellar molecular infrared radiation dynamics of interstellar molecular |
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