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爱斯基摩星云

爱斯基摩星云
NGC 2392,爱斯基摩星云
Eskimo Nebula
观测数据
历元 J2000.0)
赤经7h 29m 10.77s
赤纬+20° 54′ 42.5″
距离地球大于2900ly
视星等 (V)???
视直径 (V)1角分
所属星座双子座
物理属性
半径 (光年)~1.5 ly
绝对星等 (V)2.5 to 1
显著特色-
其他名称NGC 2392
参看:行星状星云星云列表

爱斯基摩星云(Eskimo Nebula,NGC 2392),亦称阿尼脸星云[1],是位于双子座的一个行星状星云,距离地球约2,900光年远,由英国天文学家威廉·赫歇尔在1787年发现的;使用小型望远镜就可以看见。

由于地面上观察受大气影响,影像不甚清晰之下,它像是被带头罩雪衣的敞篷围拢的正面头象,也就是因为影像不太清晰,爱斯基摩头像更甚“相似”(略带想像空间)。2000年哈伯太空望远镜对这个星云作高解像照相观测,呈现人们尚未能充分了解的复杂气体结构。

星云前身是一颗类似太阳质量的恒星,约在10,000年前,气体才在它的外围开始笼罩。其内部的细丝是由中心恒星吹出的星风中的微粒组成的,外壳中有异常的长达一光年的橙色丝线。


参考文献

  1. ^ http://www.windows.ucar.edu/the_universe/images/n2392_image.html. [2006-10-22]. (原始内容存档于2007-03-11).  外部链接存在于|title= (帮助)

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爱斯基摩星云
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