| 重大灾变事件——星系的剧烈活动 |
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| 引用本文： | 赵君亮.重大灾变事件——星系的剧烈活动[J].自然杂志,2011,33(2):70-73. |
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| 作者姓名： | 赵君亮 |
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| 作者单位： | 研究员，中国科学院上海天文台，上海 200030 |
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| 摘 要： | 自1923年美国天文学家哈勃证实河外星系的存在以来，为数众多的星系不断地被发现，它们形态各异、大小不一。令人惊讶的是，这些尺度往往以万光年计的庞大天体系统常表现出更大尺度上的剧烈活动，并影响到星系和星系内恒星的演化进程。
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| 关 键 词： | 星系 活动星系核 类星体 黑洞 银河系 |
| 收稿时间： | 2010-11-19 |
Major Catastrophes on the Scales of Celestial Objects : Violent Activities of Galaxies |
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| ZHAO Jun-liang.Major Catastrophes on the Scales of Celestial Objects : Violent Activities of Galaxies[J].Chinese Journal of Nature,2011,33(2):70-73. |
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| Authors: | ZHAO Jun-liang |
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| Institution: | Professor, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China |
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| Abstract: | More and more external galaxies with different morphological types have been found since Hubble's initiative work in 1923.Among lots of galaxies,abnormal or peculiar ones are extremely attractive,where cosmic catastrophic events on the scales much larger than stellar objects,such as galactic collision or merging,happened or are happening,which can dramatically change structure,morphology,the kinematics and dynamical evolution of galaxies and the formation and evolution of stars in galaxies. |
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| Keywords: | galaxy AGN quasar black hole Milky Way |
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