來自韋伯的條狀螺旋星系 NGC 1365
Barred Spiral Galaxy NGC 1365 from Webb
發表日期:2024-11-13
NGC 1365 距南天星座僅 5600 萬光年,是一個巨大的棒旋星系,直徑約 20 萬光年。它的大小是我們銀河系棒旋星系的兩倍。這張由詹姆斯-韋伯太空望遠鏡的中紅外儀器(MIRI)拍攝的清晰影像,以紅外光揭示了這個壯麗的螺旋星系的驚人細節。韋伯的視場綿延約 6 萬光年,橫跨 NGC 1365 ,探索銀河系的核心和明亮的新生星團。塵埃細絲和氣泡組成的錯綜複雜的網路是由年輕恆星沿著從星系中心棒蜿蜒而出的旋臂形成的。天文學家懷疑,NGC 1365 的棒狀引力場在星系的演化過程中起著至關重要的作用,它將氣體和塵埃輸送到恆星形成的漩渦中,並最終將物質輸送到這個活躍星系的中央超大質量黑洞中。
原文:A mere 56 million light-years distant toward the southern constellation Fornax, NGC 1365 is an enormous barred spiral galaxy about 200,000 light-years in diameter. That's twice the size of our own barred spiral Milky Way. This sharp image from the James Webb Space Telescope's Mid-Infrared Instrument (MIRI) reveals stunning details of this magnificent spiral in infrared light. Webb's field of view stretches about 60,000 light-years across NGC 1365, exploring the galaxy's core and bright newborn star clusters. The intricate network of dusty filaments and bubbles is created by young stars along spiral arms winding from the galaxy's central bar. Astronomers suspect the gravity field of NGC 1365's bar plays a crucial role in the galaxy's evolution, funneling gas and dust into a star-forming maelstrom and ultimately feeding material into the active galaxy's central, supermassive black hole.
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