螺旋星系ngc2841
(原标题: Spiral Galaxy NGC 2841)
2023-03-23
浏览次数: 17
距离地球仅4600万光年的螺旋星系NGC 2841位于大熊座北部的地球夜空中。这张以美丽的宇宙岛为中心的清晰图像也捕捉到了在同一望远镜视野内尖锐的前景银河系恒星和更遥远的背景星系。它展示了NGC 2841明亮的核心，以及它倾斜的星系盘和暗淡的外部区域。尘埃带、小的恒星形成区和年轻的星团嵌在星系斑驳的、紧密缠绕的旋臂中。相比之下，许多其他的螺旋星系则表现出更宽的旋臂和大的恒星形成区域。NGC 2841的直径超过15万光年，比我们的银河系还要大。x射线图像显示，巨大恒星的极端外流和恒星爆炸产生了热气羽流，延伸到NGC 2841周围的光环中。
查看原文解释
A mere 46 million light-years distant, spiral galaxy NGC 2841 can be found in planet Earth's night sky toward the northern constellation of Ursa Major. This sharp image centered on the gorgeous island universe also captures spiky foreground Milky Way stars and more distant background galaxies within the same telescopic field of view. It shows off the bright nucleus of NGC 2841, along with its inclined galactic disk, and faint outer regions. Dust lanes, small star-forming regions, and young star clusters are embedded in the galaxy's patchy, tightly wound spiral arms. In contrast, many other spirals exhibit broader, sweeping arms with large star-forming regions. NGC 2841 has a diameter of over 150,000 light-years, making it even larger than our own Milky Way. X-ray images suggest that extreme outflows from giant stars and stellar explosions create plumes of hot gas extending into a halo around NGC 2841.
© Roberto Marinoni