IC 2574 :科丁頓星雲
IC 2574: Coddington's Nebula

來源:Lorand Fenyes|發表日期:2025-02-06
大旋渦星系似乎總是最耀眼的,它們在美麗、對稱的旋臂中炫耀著自己年輕、明亮、藍色的星團。但是,不規則的小星系也會形成恆星。事實上,矮星系 IC 2574 就有明顯的證據表明,它的氫氣發光區呈紅色,顯示出強烈的恆星形成活動。就像在螺旋星系中一樣,IC 2574 星系中的恆星形成湍流區被恆星風和超新星爆炸攪動,將物質噴入星系的星際介質中,並引發進一步的恆星形成。IC 2574 距離銀河系只有 1200 萬光年,是M 81 星系群的一部分,位於大熊座北部。這個可愛的宇宙島也被稱為科丁頓星雲,直徑約 5 萬光年,由美國天文學家埃德溫-科丁頓於 1898 年發現。
原文:Grand spiral galaxies often seem to get all the glory, flaunting their young, bright, blue star clusters in beautiful, symmetric spiral arms. But small, irregular galaxies form stars too. In fact dwarf galaxy IC 2574 shows clear evidence of intense star forming activity in its telltale reddish regions of glowing hydrogen gas. Just as in spiral galaxies, the turbulent star-forming regions in IC 2574 are churned by stellar winds and supernova explosions spewing material into the galaxy's interstellar medium and triggering further star formation. A mere 12 million light-years distant, IC 2574 is part of the M81 group of galaxies, seen toward the northern constellation Ursa Major. Also known as Coddington's Nebula, the lovely island universe is about 50,000 light-years across, discovered by American astronomer Edwin Coddington in 1898.
※ 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!
關於每日一天文圖:每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務,網站每天提供一張影像或圖片,並由天文學家撰寫扼要說明其特別之處。