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环状星系NGC 2859

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Melipal 发表于 2003-6-25 20:36 | 显示全部楼层 |阅读模式 来自: 中国–天津–天津 联通

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Sloan Digital Sky Survey

This galaxy is notable for having both a bar in its disk and an outer ring structure. Bars are fairly common in disk galaxies, with upwards of 1/2 of all such galaxies having bars. The outer ring is a less common feature but is thought to be caused by gas reacting to the gravitational force of the bar at specific locations in the galaxy called "resonances". NGC 2859 is located in the constellation Leo Minor.
(Caption by Stephen Kent)
portiff 发表于 2003-6-26 20:41 | 显示全部楼层 来自: 中国–陕西–西安 电信
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meteorobs 发表于 2003-6-27 19:58 | 显示全部楼层 来自: 中国–天津–天津–南开区 联通/E网情深网吧

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像个不知道多少瓦的白炽灯炮。。。
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