M82：有超星系风的星系
(原标题: M82: Galaxy with a Supergalactic Wind)
2026-06-29
浏览次数: 2701
为什么雪茄星系会冒出滚滚的红烟？这个星暴星系也被称为M82，它是由最近一次大型螺旋星系M81附近的飞掠引起的。然而，这并不能完全解释向外膨胀的红色气体和尘埃的来源。有证据表明，这些气体和尘埃是由许多恒星形成的粒子风共同吹出的，共同形成了银河系的超级风。这些尘埃粒子被认为起源于M82的星际介质，其大小实际上与雪茄烟雾中的颗粒相似。这幅特色的摄影马赛克结合了哈勃太空望远镜可见光下拍摄的图像和詹姆斯韦伯太空望远镜红外光下拍摄的图像。它显示了浅色的中央星系几乎在图像中心的边缘，巨大的橙色和红色的气体和尘埃细丝向上和向下延伸。这些细丝绵延一万光年。1200万光年远的雪茄星系是天空中红外光下最亮的星系，用小型望远镜朝大熊星座（大熊座）方向看，可以在可见光下看到它。
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Why is the Cigar Galaxy billowing red smoke? M82, as this starburst galaxy is also known, was stirred up by a recent pass near large spiral galaxy M81. This doesn't fully explain the source of the red-glowing outwardly expanding gas and dust, however. Evidence indicates that this gas and dust is being driven out by the combined emerging particle winds of many stars, together creating a galactic superwind. The dust particles are thought to originate in M82's interstellar medium and are actually similar in size to particles in cigar smoke. The featured photographic mosaic combines images taken in visible light from the Hubble Space Telescope and images taken in infrared light from James Webb Space Telescope. It shows the light-colored central galaxy nearly edge on across the image center with tremendous orange and red colored filaments of gas and dust extending both up and down. The filaments extend for over 10,000 light years. The 12-million light-year distant Cigar Galaxy is the brightest galaxy in the sky in infrared light and can be seen in visible light with a small telescope towards the constellation of the Great Bear (Ursa Major).