来自韦伯的螺旋星系NGC 2566
(原标题: Spiral Galaxy NGC 2566 from Webb)
2025-05-26
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螺旋星系NGC 2566的中心发生了什么？首先，在这张特色红外图像中，似乎从中心发出的八束射线并不是真的——它们是由韦伯太空望远镜本身的机械结构引起的衍射峰。NGC 2566的中心是明亮的，但并不被认为是不寻常的，这意味着它可能包含一个超大质量黑洞，尽管目前不是很活跃。我们今天看到的NGC 2566距离地球只有7600万光年，是恐龙在地球上漫游时发出的光。这个风景如画的星系离我们足够近，以至于包括韦伯和哈勃在内的地球望远镜可以分辨出恒星形成的湍流气体云和尘埃云，从而可以研究恒星的演化。NGC 2566的大小与我们的银河系相似，以其明亮的中央棒状结构和突出的外旋臂而闻名。
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What’s happening in the center of spiral galaxy NGC 2566? First, the eight rays that appear to be coming out of the center in the featured infrared image are not real — they are diffraction spikes caused by the mechanical structure of the Webb space telescope itself. The center of NGC 2566 is bright but not considered unusual, which means that it likely contains a supermassive black hole, although currently not very active. At only 76 million light years away, the light we see from NGC 2566 today left when dinosaurs roamed the Earth. The picturesque galaxy is close enough so that Earthly telescopes, including Webb and Hubble, can resolve the turbulent clouds of gas and dust where stars can form and so allows study of stellar evolution. NGC 2566, similar in size to our Milky Way Galaxy, is notable for its bright central bar and its prominent outer spiral arms.