| 拱星OH脉泽辐射频谱的双峰结构和多重分离的膨胀拱星壳 |
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| 引用本文： | 俞志尧.拱星OH脉泽辐射频谱的双峰结构和多重分离的膨胀拱星壳[J].天文学报,1998,39(3):237-243. |
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| 作者姓名： | 俞志尧 |
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| 作者单位： | 中国科学院上海天文台!上海，200030 |
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| 基金项目： | 国家自然科学基金，中国科学院天文委员会和射电天文联合实验室资助 |
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| 摘 要： | 对一些OH／IR星的拱星OH脉泽的观测结果表明，在双峰结构谱线轮廓上常常可以发现一些小峰叠加在双峰上，即在谱线轮廓的双峰结构中的每个峰是由几个小峰叠加而成的．从脉泽的辐射转移方程和拱星包层的速度结构出发，研究拱星OH脉泽辐射频谱的轮廓特征，提出多重分离的膨胀拱星亮模型，很好地解释了双峰结构的奇特观测现象．
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| 关 键 词： | 拱星OH脉泽辐射 双峰结构 多重分离和膨胀 拱星壳 |
DOUBLE-PEAKED SPECTRAL PROFILES OF CIRCUMSTELLAR OH MASER EMISSION AND MULTIPLE DISTINCY AND EXPANDING CIRCUMSTELLAR SHELLS |
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| Yu Zhi-yao.DOUBLE-PEAKED SPECTRAL PROFILES OF CIRCUMSTELLAR OH MASER EMISSION AND MULTIPLE DISTINCY AND EXPANDING CIRCUMSTELLAR SHELLS[J].Acta Astronomica Sinica,1998,39(3):237-243. |
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| Authors: | Yu Zhi-yao |
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| Abstract: | The results of measurements of some circumstellar OH masers of OH / IR stars indicate that several small peaks are located on the double peaks. This implies that each peak of the double-peaked spectral profile is superposed by several small peaks.Using the equation of radiative transfer and the velocity field in the circumstellar envelope, the author has studied the double-peaked spectral profile and has proposed a new model, i.e. a multiple distinct and expading circumstellar shell. Finally, he has interpreted some strange observahonal phenomena with mis model. |
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| Keywords: | radiation of circumstellar OH maser double-peaked structure multipleditinct and expanding circimstellar shell |
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