熔爐中的星系
Galaxies in the Furnace

來源:Simone Curzi|發表日期:2025-12-04
巨大的橢圓星系 NGC 1316 位於約 7500 萬光年外的爐南星座方向,是宇宙尺度暴力的一個例子。天文學家在研究這一驚人的景象時,懷疑這個巨大的星系與在大星系中心右側看到的較小的鄰居 NGC 1317 發生了碰撞,產生了環狀和殼狀的恆星流。大約一億年前,它們親密接觸產生的光線就已經到達地球。在清晰的望遠鏡影像中,NGC 1316 和 NGC 1317 的中心區域相距超過 10 萬光年。其中可見的複雜塵埃通道也表明,NGC 1316 本身就是遙遠過去星系合併的結果。NGC 1316 位於福納克斯星系團的外圍,被稱為福納克斯 A。它是福納克斯星系團中視覺上最亮的星系之一,也是最強和最大的天體射電源之一,射電輻射遠遠超出了這個一度寬的視場。
原文:An example of violence on a cosmic scale, enormous elliptical galaxy NGC 1316 lies about 75 million light-years away toward Fornax, the southern constellation of the Furnace. Investigating the startling sight, astronomers suspect the giant galaxy of colliding with smaller neighbor NGC 1317 seen just right of the large galaxy's center, producing far flung star streams in loops and shells. Light from their close encounter would have reached Earth some 100 million years ago. In the sharp telescopic image, the central regions of NGC 1316 and NGC 1317 appear separated by over 100,000 light-years. Complex dust lanes visible within also indicate that NGC 1316 is itself the result of a merger of galaxies in the distant past. Found on the outskirts of the Fornax galaxy cluster, NGC 1316 is known as Fornax A. One of the visually brightest of the Fornax cluster galaxies it is one of the strongest and largest celestial radio sources with radio emission extending well beyond this one degree wide field-of-view.
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