Arp 286：处女座的三重奏
(原标题: Arp 286: Trio in Virgo)
2022-06-10
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这张彩色的望远镜视野展示了三个相互作用的星系，距离室女座近9000万光年。在右边，两颗尖尖的前景银河系恒星与星系外的色调相呼应，提醒我们银河系中的恒星就像遥远的宇宙岛屿上的恒星一样。这三个星系中的主要成员NGC 5566有着巨大的旋臂和模糊的尘埃带，它的直径约为15万光年。它的上方是较小的蓝色ngc5569。在中心附近，第三个星系NGC 5560，由于与大质量星系NGC 5566的相互作用，显然被拉伸和扭曲了。这三个星系也被包括在哈尔顿·阿普1966年的特殊星系地图集中，名为阿普286。当然，这种宇宙间的相互作用现在被认为是星系演化的一部分。
查看原文解释
This colorful telescopic field of view features a trio of interacting galaxies almost 90 million light-years away, toward the constellation Virgo. On the right two spiky, foreground Milky Way stars echo the extragalactic hues, a reminder that stars in our own galaxy are like those in distant island universes. With sweeping spiral arms and obscuring dust lanes, the dominant member of the trio, NGC 5566, is enormous, about 150,000 light-years across. Just above it lies smaller, bluish NGC 5569. Near center a third galaxy, NGC 5560, is apparently stretched and distorted by its interaction with massive NGC 5566. The trio is also included in Halton Arp's 1966 Atlas of Peculiar Galaxies as Arp 286. Of course, such cosmic interactions are now appreciated as part of the evolution of galaxies.
© Nicolas Rolland