NGC 7714 :星系碰撞後的星爆
NGC 7714: Starburst after Galaxy Collision

發表日期:2024-03-17
這個星系是在一個巨大的恆星環中跳躍嗎? 可能不是。 雖然目前還不清楚這張圖片背後的確切動態,但可以確定的是,圖片中的星系NGC 7714 由於最近與鄰近星系的碰撞而被拉伸和扭曲了。這個較小的鄰星系,NGC 7715 ,位於畫面的左側,被認為是直接衝過了 NGC 7714 。觀測結果表明,圖中的金環是由數百萬顆較老的類太陽恆星組成的,它們很可能與內部較藍的恆星共同運動。相比之下,NGC 7714 明亮的中心似乎正在經歷新恆星形成的爆發。 這張照片由哈勃太空望遠鏡拍攝。 NGC 7714 位於雙魚座方向約 1 . 3 億光年遠的地方。 這些星系之間的相互作用很可能在大約 1 . 5 億年前就開始了,並將持續幾億年,之後可能會形成一個單一的中心星系。
原文:Is this galaxy jumping through a giant ring of stars? Probably not. Although the precise dynamics behind the featured image is yet unclear, what is clear is that the pictured galaxy, NGC 7714, has been stretched and distorted by a recent collision with a neighboring galaxy. This smaller neighbor, NGC 7715, situated off to the left of the frame, is thought to have charged right through NGC 7714. Observations indicate that the golden ring pictured is composed of millions of older Sun-like stars that are likely co-moving with the interior bluer stars. In contrast, the bright center of NGC 7714 appears to be undergoing a burst of new star formation. The featured image was captured by the Hubble Space Telescope. NGC 7714 is located about 130 million light years away toward the constellation of the Two Fish (Pisces). The interactions between these galaxies likely started about 150 million years ago and should continue for several hundred million years more, after which a single central galaxy may result.
※ 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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