美国国家航空航天局NASA每日一图(天文)-2017年6月25日

2017 June 25

The N44 Superbubble Image Credit & Copyright: Gemini Obs., AURA, NSF
Explanation: What created this gigantic hole? The vast emission nebula N44 in our neighboring galaxy the Large Magellanic Cloud has a large, 250 light-year hole and astronomers are trying to figure out why. One possibility is particle winds expelled by massive stars in the bubble's interior that are pushing out the glowing gas. This answer was found to be inconsistent with measured wind velocities, however. Another possibility is that the expanding shells of old supernovas have sculpted the unusual space cavern. An unexpected clue of hot X-ray emitting gas was recently been detected escaping the N44 superbubble. The featured image was taken in three very specific colors by the huge 8-meter Gemini South Telescope on Cerro Pachon in Chile.

2017年6月25日

N44 superbubble的图像信用和版权:双子Obs,AURA,NSF

解释:是什么创造了这个巨大的洞?在我们邻近星系的巨大的发射星云中,大麦哲伦星云有一个巨大的250光年的洞,天文学家正试图弄清楚原因。一种可能性是在气泡内部的大量恒星排出的粒子风,将发光的气体推动。然而,这一答案与实测风速是不一致的。另一种可能是,旧超新星的膨胀外壳雕刻了不寻常的太空洞穴。一个意外的热X射线发射气体的线索最近被检测到逃离N44 superbubble。这幅有特色的图片是在智利的Cerro Pachon上,由巨大的8米的双子星南望远镜拍摄的三个非常特别的颜色。

评论已关闭