| 星系中巨分子云的形成与演化 |
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| 引用本文： | 张同杰,宋国玄. 星系中巨分子云的形成与演化[J]. 天文学进展, 1996, 0(4) |
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| 作者姓名： | 张同杰 宋国玄 |
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| 作者单位： | 中国科学院上海天文台，中国科学院上海天文台 上海 200030，上海 200030 |
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| 基金项目： | 中国科学院上海天文台青年实验室资助课题 |
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| 摘 要： | 星系中的巨分子云(GMCs)是恒星形成的主要区域,因此它的形成和演化对于星系的演化是至关重要的。本文中将介绍分子云的基本特性、分子云之间的碰撞和巨分子云的形成、碎裂和寿命以及其他环境因素,如旋臂扰动、较差自转等在巨分子云的形成和演化中的作用。同时也探讨在采用数值模拟研究巨分子云演化时所取分子云数目的影响。
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| 关 键 词： | 星系:星际介质 星际介质:云 |
The Formation and Evolution of Giant Molecular Clouds in Galaxies |
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| Zhang Tongjie,Song Guoxuan Shanghai Astronomical Obervatory,The Chinese Academy of Science,Shanghai. The Formation and Evolution of Giant Molecular Clouds in Galaxies[J]. Progress In Astronomy, 1996, 0(4) |
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| Authors: | Zhang Tongjie Song Guoxuan Shanghai Astronomical Obervatory The Chinese Academy of Science Shanghai |
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| Affiliation: | Zhang Tongjie,Song Guoxuan Shanghai Astronomical Obervatory,The Chinese Academy of Science,Shanghai 200030 |
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| Abstract: | In this paper, the essential properties of molecular clouds, the collision between molecularclouds and the formation of GMCs are introduced. In addition, the disruption and lifetime ofGMCs, together with the influences of spiral pertubation and differential rotation on the formationof GMCs, are also reviewed. The effect of the adopted molecular cloud number in the simulationon the result is discussed as well. |
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| Keywords: | galaxies ISM--ISM molecular cloudl |
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