NGC 2442 :飛魚座星系
NGC 2442: Galaxy in Volans

來源:Mike Selby|發表日期:2026-01-29
扭曲星系NGC 2442 位於南天飛魚座(Piscis Volans)。這張色彩絢麗的深空影像中,該星系距地球約 5000 萬光年,其兩條螺旋臂從醒目的中央星系棒延伸而出,形成鉤狀外觀,前景恆星散佈於望遠鏡視野中。 影像同時揭示了這座遙遠星系的遮蔽性塵埃帶、年輕的藍色星團以及環繞著老年恆星群發出的黃色核心光的紅色星形成區域。 但星形成區域似乎更集中於拉長的(右上)螺旋臂。這種扭曲結構很可能是該星系與左上角外框處較小星系古代近距離遭遇的結果。在NGC 2442 的估計距離下,此望遠鏡視野跨度超過 20 萬光年。
原文:Distorted galaxy NGC 2442 can be found in the southern constellation of the flying fish, (Piscis) Volans. Located about 50 million light-years away, the galaxy's two spiral arms extending from a pronounced central bar give it a hook-shaped appearance in this deep and colorful image, with foreground stars scattered across the telescopic field of view. The image also reveals the distant galaxy's obscuring dust lanes, young blue star clusters and reddish star forming regions surrounding a core of yellowish light from an older population of stars. But the star forming regions seem more concentrated along the drawn-out (upper right) spiral arm. The distorted structure is likely the result of an ancient close encounter with a smaller galaxy that lies off top left of the frame. This telescopic field of view spans over 200,000 light-years at the estimated distance of NGC 2442.
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