奇特的椭圆星系半人马座A
(原标题: Peculiar Elliptical Galaxy Centaurus A)
2026-03-30
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这个星系的中心发生了什么？引人注目的尘埃带穿过不寻常的椭圆星系半人马座a的中心。这些尘埃带非常厚，在可见光下几乎完全遮蔽了星系的中心。这是特别不寻常的，因为半人马座A的老恒星和椭圆形是巨大椭圆星系的特征，这是一种典型的低暗尘埃星系。在这张深度图像中，是一个复杂的前景气体和尘埃网络，以及暗淡恒星的外壳和突出在右上方的喷流。半人马座A也被称为NGC 5128，它肯定是星系碰撞的结果，许多年轻的尘埃恒星在碰撞中形成。然而，半人马座A异常活跃的中心和标志性的中心尘埃带的形成细节仍在研究中。半人马座A距离我们只有1300万光年，是离我们最近的活动星系。拼图星系：今日天文谜题
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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
© SADR Observatory Team: J-C Dalouzy, P. Bazart, M. Dherbécourt, C. Humbert, G. Leroy, J-P Quéau, H. Talbot, & E. Valin