M100和超新星SN 2006X
本帖最后由 panyue 于 2009-4-4 20:42 编辑Full size: http://www.eso.org/gallery/d/86694-3/ESO-M100_cc.tif （4.51MB）
http://www.eso.org/gallery/d/86710-2/ESO-M100_cc.jpg
Similar in appearance to our own Milky Way, Messier 100 is a grand spiral galaxy that presents an intricate structure, with a bright core and two prominent arms. The galaxy harbours numerous young and hot massive stars as well as extremely hot regions of ionised hydrogen. Two smaller arms are seen emerging from the centre and reaching towards the larger spiral arms. The galaxy, located 60 million light-years away, is sightly larger than the Milky Way, with a diameter of about 120 000 light-years. A supernova was discovered in M100 on 4 February 2006. Named SN 2006X, it is the 5th supernova to have been found in M100 since 1900. (From ESO)
自翻：
其外观类似于我们自己的银河，M100是一个呈现出复杂结构的巨大螺旋星系，它有一个光亮的核心以及两条突出的旋臂。该星系庇藏了众多年轻炙热的大质量恒星以及酷热的电离氢区。两条较小的旋臂看起来像从中心脱离出来并成为更大的旋臂。该星系位于6000万光年之外，略大于银河系，直径约12万光年。在M100中的超新星发现于2006年2月4日。被命名为SN 2006X，它是自1900年以来在M100中发现的第5颗超新星。（来自ESO） M100, 室女座星系团的大漩涡::070821_04.jpg:: 请楼主快点改掉一个低级错误，M100直径是12万光年，直径50万光年以上的星系我们还没见过呢。 请楼主快点改掉一个低级错误，M100直径是12万光年，直径50万光年以上的星系我们还没见过呢。
gohomeman1 发表于 2009-4-4 15:00 http://www.astronomy.com.cn/bbs/images/common/back.gif
出了点差错，感谢提醒！::09:: 有学习性!谢谢LZ啦!
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