M 83 :南方風車
M83: The Southern Pinwheel
發表日期:2025-01-16
美麗而明亮的螺旋星系 M 83 位於大約 1200 萬光年之外,靠近很長的水螅座的東南端。由暗色塵埃通道和藍色星團構成的突出旋臂給這個星系帶來了一個響亮的名字--南方風車。 不過,在這個宇宙風車的旋臂上點綴著的淡紅色恆星形成區也為它帶來了另一個綽號--千紅星系(Thousand-Ruby Galaxy)。M 83 的直徑只有 4 萬光年,比銀河系還小,是包括活躍星系半人馬座 A 在內的星系群的成員之一。事實上,M 83 的核心本身在 X 射線能量下就很明亮,顯示出大量中子星和黑洞的聚集,這些中子星和黑洞是恆星形成的強烈爆發後留下的。這張清晰的彩色圖片還顯示了尖銳的前景銀河系恆星和遙遠的背景星系。影像資料由 Cerro Tololo 美洲天文臺的暗能量相機和布蘭科 4 米望遠鏡拍攝。
原文:Beautiful and bright spiral galaxy M83 lies a some twelve million light-years away, near the southeastern tip of the very long constellation Hydra. Prominent spiral arms traced by dark dust lanes and blue star clusters lend this galaxy its popular name, The Southern Pinwheel. Still, reddish star forming regions that dot this cosmic pinwheel's spiral arms have suggested another nickname, the Thousand-Ruby Galaxy. A mere 40,000 light-years across, smaller than the Milky Way, M83 is a member of a group of galaxies that includes active galaxy Centaurus A. In fact, the core of M83 itself is bright at x-ray energies, showing a high concentration of neutron stars and black holes left from an intense burst of star formation. This sharp color image also features spiky foreground Milky Way stars and distant background galaxies. The image data was captured with the Dark Energy Camera and Blanco 4-meter telescope at Cerro Tololo Inter-American Observatory.
※ 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。