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Ancient 'Ring of Fire' Galaxy
Eleven billion years ago, a hot, active, galaxy that looked like an eye glared across space. Now, using data from the W.M. Keck Observatory in Hawaii and the Hubble Space Telescope, astronomers have captured a snapshot of its unblinking gaze.
110亿年前,一个炙热、活跃、看起来像一只眼睛的星系划过太空。现在,利用来自夏威夷W.M.凯克天文台和哈勃太空望远镜的数据,天文学家已经捕捉到了它凝视的快照。
This galaxy, R5519, is made up of a flat ring of stars, with a hole in the middle where astronomers believe another blob of stars punched through. Galaxies like this, known as "collisional ring galaxies," turn up infrequently in the modern universe. But this is the first time astronomers have seen one so old and far away; at 11 billion light-years from our planet, its ancient light is only just reaching Earth.
这个星系,R5519,是由一圈扁平的恒星组成的,中间有一个洞,天文学家认为是另一团恒星从中穿过。像这样的星系,被称为“碰撞环星系”,在现代宇宙中很少出现。但这是天文学家第一次看到如此古老和遥远的行星;它距离地球110亿光年,其古老的光芒才刚刚抵达地球。
研究人员称,我们宇宙中大部分环形星系都是由星系内部活动形成的,现代宇宙中只有千分之一的星系因为碰撞而形成。锵锵锵!根据这份5月25日发表在 自然天文 期刊上的最新论文,这个星系的形状看起来确实像是和其他物体碰撞的结果。
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