| OH/IR脉泽源的空间运动 |
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| 引用本文： | 彭瑞生,孙锦.OH/IR脉泽源的空间运动[J].中国天文和天体物理学报,1986(2). |
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| 作者姓名： | 彭瑞生 孙锦 |
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| 作者单位： | 云南天文台
(彭瑞生)，北京师范大学(孙锦) |
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| 摘 要： | 本文在“OH/IR脉泽源的空间分布和光度函数”一文的基础上,对其所用的127个已有光学或红外证认的OH脉泽源的空间运动特性进行了分析,找到各类OH/IR脉泽源的视向速度与银河系较差自转运动的偏离以及各种速度分离下源的运动特点,同时利用文1]所得的已证认OH/IR源的空间真实密度分布,导出了它们的速度分布模型N(l,v)。对与新证认的非IRC红外源(通常是在更长波长上观测到的)成协的OH/IR源发现有一以银心为心的约为50km/s的径向膨胀运动。文章最后对已证认和未证认的OH/IR脉泽源的差别和联系进行了讨论。
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| 关 键 词： | 星际介质 星际介质运动学和星际介质动力学 |
The Kinematics of OH/IR Maser Sources |
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| Peng Buisheng.The Kinematics of OH/IR Maser Sources[J].Chinese Journal of Astronomy and Astrophysics,1986(2). |
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| Authors: | Peng Buisheng |
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| Abstract: | On the basis of "The spatial distribution and luminosity 'function of OH/IR ma-ser sources", this paper analysed the kinematics of 127 OH/IR sources mentioned in 1]. All these sources have optical or infrared identification. We found out the deviations from the Galaxy circular motion for the spatial motion of different type OH/IR sources and the characteristics of motion under various velocity separations for OH/IR sources. We also derived a model for the velocity distribution of OH/IR sources from the true spatial density distribution obtained from 1]. For the OH maser sources associated with recently identified infrared sources (not IRC sources), there is a radial expanding velocity of 50 km/s at R-4.2 Kpc from galactic center. Finally, we disscu-sed the difference and relationship between identified and unidentified OH/IR maser sources. |
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| Keywords: | Interstellar Medium : kinematics and dynamics of |
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