LEDA 1313424 ：牛眼星系
LEDA 1313424: The Bullseye Galaxy
發表日期：2025-02-07
這個巨型星系的編號為 LEDA 1313424 ，其大小大約是我們銀河系的兩倍半。在最近釋出的這張哈勃太空望遠鏡影像中，它的外形十分引人注目，這也讓人對它的綽號 "牛眼星系 "深信不疑。它被稱為碰撞環星系，望遠鏡觀測證實它有九個環，從它的中心蕩漾開來，就像鵝卵石掉進池塘裡激起的波紋。當然，掉入牛眼星系的鵝卵石本身就是一個星系。望遠鏡觀測發現，位於中心左側的藍矮星系可能是碰撞者，它穿過巨型星系的中心，並在引力相互作用後形成同心環。牛眼星系位於大約 5 . 67 億光年外的雙魚座方向。在這個距離上，這幅令人驚歎的哈勃影像將跨越大約 53 萬光年。
原文：The giant galaxy cataloged as LEDA 1313424 is about two and a half times the size of our own Milky Way. Its remarkable appearance in this recently released Hubble Space Telescope image strongly suggests its nickname "The Bullseye Galaxy". Known as a collisional ring galaxy it has nine rings confirmed by telescopic observations, rippling from its center like waves from a pebble dropped into a pond. Of course, the pebble dropped into the Bullseye galaxy was a galaxy itself. Telescopic observations identify the blue dwarf galaxy at center-left as the likely collider, passing through the giant galaxy's center and forming concentric rings in the wake of their gravitational interaction. The Bullseye Galaxy lies some 567 million light-years away toward the constellation Pisces. At that distance, this stunning Hubble image would span about 530,000 light-years.
※ 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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