UGC 1810 ：來自哈勃的瘋狂互動星系
UGC 1810: Wildly Interacting Galaxy from Hubble
來源：Domingo Pestana｜發表日期：2025-06-01
這個螺旋星系發生了什麼？儘管細節還不確定，但它肯定與它的小星系鄰居正在進行的一場戰鬥有關。特寫星系本身被命名為 UGC 1810 ，但與它的碰撞夥伴一起被稱為 Arp 273 。UGC 1810 的整體形狀，尤其是它的藍色外環，很可能是狂暴的引力相互作用的結果。外環的藍色是由藍熱的大質量恆星造成的，這些恆星是在過去幾百萬年中才形成的。 內星系看起來更古老、更紅，並佈滿了冷絲狀塵埃。 幾顆明亮的恆星出現在前景中，與 UGC 1810 無關，而幾個星系則在背景中清晰可見。 Arp 273 位於大約 3 億光年外的仙女座方向。 很有可能，UGC 1810 將在接下來的十億年裡吞噬掉它的星系夥伴，然後變成一個經典的螺旋形態。
原文：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.
※ 本文由萌芽機器人自動轉貼自每日一天文圖（Astronomy Picture of the Day，APOD），原文為英文，正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理，內容僅供參考，若有任何錯誤之處還請見諒！
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