NGC 4651：伞状星系
(原标题: NGC 4651: The Umbrella Galaxy)
2022-02-07
浏览次数: 16
天上下着星星。看起来像一个巨大的宇宙保护伞的东西，现在被认为是从一个小卫星星系剥离出来的恒星潮汐流。主星系是螺旋星系NGC 4651，它的大小和我们的银河系差不多，而它的恒星遮阳伞似乎在这个星系明亮的圆盘上方延伸了大约10万光年。当一个小星系在ngc4651的偏心轨道上来回扫过时，它可能被反复的相遇撕裂了。在接下来的几百万年里，剩下的恒星肯定会后退，成为一个更大的星系的一部分。这幅特色图像是由位于美国夏威夷的加拿大-法国-夏威夷望远镜（CFHT）拍摄的。这个伞形星系位于距离我们大约5000万光年远的北方彗发座（Coma Berenices）。几乎超空间：随机APOD生成器
查看原文解释
It's raining stars. What appears to be a giant cosmic umbrella is now known to be a tidal stream of stars stripped from a small satellite galaxy. The main galaxy, spiral galaxy NGC 4651, is about the size of our Milky Way, while its stellar parasol appears to extend some 100 thousand light-years above this galaxy's bright disk. A small galaxy was likely torn apart by repeated encounters as it swept back and forth on eccentric orbits through NGC 4651. The remaining stars will surely fall back and become part of a combined larger galaxy over the next few million years. The featured image was captured by the Canada-France-Hawaii Telescope (CFHT) in Hawaii, USA. The Umbrella Galaxy lies about 50 million light-years distant toward the well-groomed northern constellation Coma Berenices. Almost Hyperspace: Random APOD Generator
© CFHT