| 星际H2O与OH分子脉泽的统计与激发机制探讨 |
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| 引用本文： | 刘汉淜,Forster J R,孙锦. 星际H2O与OH分子脉泽的统计与激发机制探讨[J]. 光谱学与光谱分析, 2006, 26(3): 408-410 |
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| 作者姓名： | 刘汉淜 Forster J R 孙锦 |
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| 作者单位： | 北京师范大学物理系,北京,100875;University of California, Berkeley, 42231 Bidwell Road, Hat Creek, CA 96040;北京师范大学天文系,北京,100875 |
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| 摘 要： | 报告了大质量恒星形成区的星际分子脉泽巡天观测结果.所观测到的H2O与OH分子脉泽可分为三类,它们的数量近似相等,寿命亦近似相等～105年,但HⅡ区普遍短缺.提出了一种新的辐射机制模型,它克服了旧辐射模型的缺点,可以解释星际H2O与OH脉泽的成因,以及作者的观测统计结果.
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| 关 键 词： | 星际分子脉泽 激发机制 HⅡ区 巡天观测 |
| 文章编号： | 1000-0593（2006）03-0408-03 |
| 收稿时间： | 2004-12-18 |
| 修稿时间： | 2005-05-08 |
The Survey and Its Interpretation for Interstellar OH and H2O Masers |
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| LIU Han-peng,Forster J R,SUN Jin. The Survey and Its Interpretation for Interstellar OH and H2O Masers[J]. Spectroscopy and Spectral Analysis, 2006, 26(3): 408-410 |
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| Authors: | LIU Han-peng Forster J R SUN Jin |
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| Affiliation: | 1. Department of Physics, Beijing Normal University, Beijing 100875, China; 2. University of California, Berkeley, Hat Creek Radio Observatory, 42231 Bidwell Road, Hat Creek, CA 96040, U. S. A ;3. Department of Astronomy, Beijing Normal University, Beijing 100875, China |
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| Abstract: | A statistics of sky survey for interstellar H2O and OH masers is presented. These masers can be classified into 3 categories. The total number of sources in each category is of the same order of magnitude, and they can maintain--10(5) years. But there are fewer than half masers with detectable H II regions. An improved radiative pumping mechanism is proposed, and it overcame the known drawback of former radiative models. The observationally statistical results can be interpreted by both the new mechanism and the evolutional model with gravitational force of star responsible for the H II region. |
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