UGC 1810：来自哈勃的疯狂相互作用星系
(原标题: UGC 1810: Wildly Interacting Galaxy from Hubble)
2025-06-01
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这个螺旋星系发生了什么？虽然细节仍不确定，但它肯定与它的小邻居正在进行的战斗有关。这个有特色的星系本身被标记为UGC 1810，但与它的碰撞伙伴一起被称为Arp 273。UGC 1810的整体形状——尤其是它的蓝色外环——很可能是剧烈的引力相互作用的结果。这个环的蓝色是由大质量恒星造成的，这些恒星是蓝热的，在过去的几百万年里才形成的。内部星系看起来更老，更红，布满了冷丝状尘埃。几颗明亮的恒星出现在前景中，与UGC 1810无关，而背景中的几个星系则清晰可见。Arp 273位于大约3亿光年之外的仙女座。UGC 1810很有可能在未来10亿年内吞噬它的银河系伙伴，并形成一个经典的螺旋形。
查看原文解释
What's happening to this spiral galaxy? Although details remain uncertain, it surely has to do with an ongoing battle with its smaller galactic neighbor. The featured galaxy is labelled UGC 1810 by itself, but together with its collisional partner is known as Arp 273. The overall shape of UGC 1810 -- in particular its blue outer ring -- is likely a result of wild and violent gravitational interactions. This ring's blue color is caused by massive stars that are blue hot and have formed only in the past few million years. The inner galaxy appears older, redder, and threaded with cool filamentary dust. A few bright stars appear well in the foreground, unrelated to UGC 1810, while several galaxies are visible well in the background. Arp 273 lies about 300 million light years away toward the constellation of Andromeda. Quite likely, UGC 1810 will devour its galactic sidekick over the next billion years and settle into a classic spiral form.
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