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发表于 2012-12-21 10:34
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回复: 25来自: 辽宁省沈阳市沈河区 电信
本帖最后由 汗淋学士 于 2012-12-21 10:36 编辑
本帖最后由 汗淋学士 于 2012-12-21 10:28 编辑
哈勃星图:美貌的 IC 4406
说明:这个像广场一样的长方形,能是圆形恒星的星云吗?这就是要研究的课题,行星状星云 IC 4406 的图像。
证据表明,IC 4406 可能是一个空心圆柱体,在我们的位置看是像长方形的广场,就如同从侧面观看气缸。
IC 4406 如果能从顶部看,可能会看起来类似于环状星云。
这张复合色的图像,由哈勃太空望远镜在2001年和2002年拍摄的。
热气体流出的两端,而暗尘埃和分子气体的细丝也在刻画着边界壁。
可以发现主要负责本星际雕塑的是行星状星云中心的恒星。
在过几百万年,IC 4406 剩下唯一可见的将会是一个衰落的白矮星。
原文:
Explanation: How can a round star make a square nebula? This conundrum comes to light when studying planetary nebulae like IC 4406. Evidence indicates that IC 4406 is
likely a hollow cylinder, with its square appearance the result of our vantage point
in viewing the cylinder from the side. Were IC 4406 viewed from the top, it would
likely look similar to the Ring Nebula. This representative-color picture is a
composite made by combining images taken by the Hubble Space Telescope in 2001 and
2002. Hot gas flows out the ends of the cylinder, while filaments of dark dust and
molecular gas lace the bounding walls. The star primarily responsible for this
interstellar sculpture can be found in the planetary nebula's center. In a few million
years, the only thing left visible in IC 4406 will be a fading white dwarf star.
翻译水平有限,请别指点,因为修改时限只有5分钟,你说了我也没法改了?
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