NGC 1850：在银河系中没有发现
(原标题: NGC 1850: Not Found in the Milky Way)
2023-02-20
浏览次数: 15
在我们的银河系中，没有任何东西像这个恒星球一样。这是令人惊讶的，因为乍一看，这张由哈勃太空望远镜拍摄的特色图像表明，NGC 1850星团的大小和形状让人想起许多古老的球状星团，它们在我们银河系的光环中漫游。但是NGC 1850的恒星都太年轻了，这使得它成为一种星团，在银河系中没有已知的对应星系。此外，NGC 1850也是一个双星星团，在这个大星团中心的右边可以看到第二个紧凑的星团。据估计，大星团中的恒星年龄为5000万年，而致密星团中的恒星更年轻，年龄约为400万年。ngc1850距离我们只有16.8万光年，位于大麦哲伦星系的边缘。图像左侧的发光气体丝，就像我们银河系中的超新星遗迹，证明了剧烈的恒星爆炸，并表明该地区最近出现了短寿命的大质量恒星。
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There is nothing like this ball of stars in our Milky Way Galaxy. This is surprising because, at first glance, this featured image by the Hubble Space Telescope suggests that star cluster NGC 1850's size and shape are reminiscent of the many ancient globular star clusters which roam our own Milky Way Galaxy's halo. But NGC 1850's stars are all too young, making it a type of star cluster with no known counterpart in the Milky Way. Moreover, NGC 1850 is also a double star cluster, with a second, compact cluster of stars visible here just to the right of the large cluster's center. Stars in the large cluster are estimated to be 50 million years young, while stars in the compact cluster are younger still, with an age of about 4 million years. A mere 168,000 light-years distant, NGC 1850 is located near the outskirts of the Large Magellanic Cloud galaxy. The glowing gas filaments across the image left, like supernova remnants in our own galaxy, testify to violent stellar explosions and indicate that short-lived massive stars have recently been present in the region.