奇特的橢圓星系半人馬座A
Peculiar Elliptical Galaxy Centaurus A

來源:SADR Observatory Team:
J-C Dalouzy,
P. Bazart, M. Dherbécourt, C. Humbert, G. Leroy,
J-P Quéau, H. Talbot, & E. Valin|發表日期:2026-03-30
這個星系的中心發生了什麼? 在奇特的橢圓星系半人馬座A(Cen A)的中心,橫亙著壯觀的塵埃帶。這些塵埃帶異常濃密,幾乎完全遮蔽了該星系在可見光下的中心區域。 這尤其不同尋常,因為半人馬座A 中的年老恆星及其橢圓形結構,本是巨型橢圓星系的典型特徵,而這類星系通常含有較少的暗塵埃。 這張深空影像中展現了一個由前景氣體和塵埃構成的複雜網路,以及暗淡恆星構成的殼層和向右上方延伸的噴流。 半人馬座A(又名NGC 5128 )無疑是星系碰撞的結果,此次碰撞催生了大量能產生塵埃的年輕恆星。然而,關於半人馬座A 異常活躍的中心以及標誌性中央塵埃帶的形成細節,目前仍在研究之中。半人馬座A 距離我們僅 1300 萬光年,是距離地球最近的活動星系。 拼圖星系:每日天文謎題
原文:What's happened to the center of this galaxy? Dramatic dust lanes run across the center of unusual elliptical galaxy Centaurus A. These dust lanes are so thick they almost completely obscure the galaxy's center in visible light. This is particularly unusual as Cen A's older stars and oval shape are characteristic of a giant elliptical galaxy, a galaxy type typically low in dark dust. Pictured in this deep image is a complex network of foreground gas and dust, as well as shells of dim stars and a jet projecting to the upper right. Also known as NGC 5128, Cen A is surely the result of a galactic collision where many young dust-creating stars were formed. However, details of the creation of Cen A's unusually active center and iconic central dust lanes are still being researched. Cen A lies only 13 million light years away, making it the closest active galaxy. Jigsaw Galaxy: Astronomy Puzzle of the Day
※ 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。