NGC 7814：小墨西哥帽
(原标题: NGC 7814: Little Sombrero)
2025-01-23
浏览次数: 20
把你的望远镜对准飞马座，你就能看到这片由银河系恒星和遥远星系组成的广阔宇宙。NGC 7814位于锐利视野的中心，几乎可以被满月覆盖。NGC 7814有时被称为小草帽，因为它与更明亮、更著名的草帽星系M104相似。宽边帽和小宽边帽都是螺旋星系，它们都有广泛的光晕和中央凸起，被一个薄薄的圆盘切割，轮廓上有更薄的尘埃带。事实上，NGC 7814距离我们约4000万光年，直径估计为6万光年。实际上，这使得“小草帽”的物理尺寸与其更为人所熟知的同名产品大致相同，只是因为距离更远，所以看起来更小、更暗淡。
查看原文解释
Point your telescope toward the high flying constellation Pegasus and you can find this cosmic expanse of Milky Way stars and distant galaxies. NGC 7814 is centered in the sharp field of view that would almost be covered by a full moon. NGC 7814 is sometimes called the Little Sombrero for its resemblance to the brighter more famous M104, the Sombrero Galaxy. Both Sombrero and Little Sombrero are spiral galaxies seen edge-on, and both have extensive halos and central bulges cut by a thin disk with thinner dust lanes in silhouette. In fact, NGC 7814 is some 40 million light-years away and an estimated 60,000 light-years across. That actually makes the Little Sombrero about the same physical size as its better known namesake, appearing smaller and fainter only because it is farther away.
© Mike Selby