九头蛇星团
(原标题: The Hydra Cluster of Galaxies)
2026-06-05
浏览次数: 2088
在我们的银河系中，在这张宇宙快照的前景中，有两颗明亮、尖尖的恒星像哨兵一样站在那里。在它们的远处是九头蛇星系团。事实上，虽然这些尖尖的前景恒星距离我们几百光年远，但九头蛇星系团离我们远超过1亿光年。靠近星团中心的三个大星系，两个黄色椭圆星系（NGC 3311, NGC 3309）和一个突出的蓝色螺旋星系（NGC 3312），是主要星系，每个星系的直径约为150,000光年。编号为NGC 3314的一对有趣的重叠星系位于NGC 3312的上方和左侧。九头蛇星系团也被称为Abell 1060，是距离银河系2亿光年的三个大型星系团之一。在邻近的宇宙中，星系被引力束缚成星系团，而星系团本身又松散地束缚成超星系团。反过来，超星系团可以在更大的尺度上排列。
查看原文解释
Within our own Milky Way galaxy, two bright, spiky stars stand like sentinels in the foreground of this cosmic snapshot. Far beyond them are the galaxies of the Hydra Cluster. In fact, while the spiky foreground stars are hundreds of light-years distant, the Hydra Cluster galaxies are well over 100 million light-years away. Three large galaxies near the cluster center, two yellow ellipticals (NGC 3311, NGC 3309) and one prominent blue spiral (NGC 3312), are the dominant galaxies, each about 150,000 light-years in diameter. An intriguing overlapping galaxy pair cataloged as NGC 3314 lies above and left of NGC 3312. Also known as Abell 1060, the Hydra galaxy cluster is one of three large galaxy clusters within 200 million light-years of the Milky Way. In the nearby universe, galaxies are gravitationally bound into clusters which themselves are loosely bound into superclusters. Superclusters in turn are seen to align over even larger scales.
© Rafael Sampaio