位于Camelopardalis的ngc2403
(原标题: NGC 2403 in Camelopardalis)
2024-06-03
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壮丽的岛屿宇宙ngc2403位于长颈骆驼座的边界内。这个距离我们约1000万光年，直径约5万光年的螺旋星系似乎也有更多的巨星形成HII区域，其标志是原子氢气发出的红色光芒。巨大的HII区域是由炽热的大质量恒星组成的星团提供能量的，这些恒星在它们短暂而狂暴的生命结束时爆炸成明亮的超新星。NGC 2403是M81星系群的一员，与我们所在星系群中的一个星系非常相似，这个星系有丰富的恒星形成区域，M33，即三角星系。在这幅NGC 2403的肖像中，明亮的恒星在我们银河系的前景中，看起来像尖刺一样。在这张广角深空望远镜图像的前景中，还有银河系暗淡而布满尘埃的星际云，也被称为星系卷云或综合通量星云。但似乎从NGC 2403本身延伸出来的微弱特征很可能是由邻近星系的引力相互作用引起的潮汐恒星流。
查看原文解释
Magnificent island universe NGC 2403 stands within the boundaries of the long-necked constellation Camelopardalis. Some 10 million light-years distant and about 50,000 light-years across, the spiral galaxy also seems to have more than its fair share of giant star forming HII regions, marked by the telltale reddish glow of atomic hydrogen gas. The giant HII regions are energized by clusters of hot, massive stars that explode as bright supernovae at the end of their short and furious lives. A member of the M81 group of galaxies, NGC 2403 closely resembles a galaxy in our own local galaxy group with an abundance of star forming regions, M33, the Triangulum Galaxy. Spiky in appearance, bright stars in this portrait of NGC 2403 are in the foreground, within our own Milky Way. Also in the foreground of the deep, wide-field, telescopic image are the Milky Way's dim and dusty interstellar clouds also known as galactic cirrus or integrated flux nebulae. But faint features that seem to extend from NGC 2403 itself are likely tidal stellar streams drawn out by gravitational interactions with neighboring galaxies.
© (Team F.A.C.T.)