ngc247和朋友
(原标题: NGC 247 and Friends)
2024-09-05
浏览次数: 12
ngc247直径约7万光年，是一个比银河系小的螺旋星系。虽然距离我们只有1100万光年，但它离我们很近。从我们的角度看，它几乎是倾斜的，在这张南鲸座的望远镜视野中占据主导地位。星系盘一侧明显的空洞让一些人想起了它的通俗名字——针眼星系。在这幅清晰的星系肖像中可以看到许多背景星系，包括ngc247下方和左侧的四个星系组成的引人注目的星系链，被称为伯比奇链。伯比奇链星系距离我们大约3亿光年。ngc247本身是雕塑家星系群的一部分，与闪亮的螺旋星系ngc253一起。
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About 70,000 light-years across, NGC 247 is a spiral galaxy smaller than our Milky Way. Measured to be only 11 million light-years distant it is nearby though. Tilted nearly edge-on as seen from our perspective, it dominates this telescopic field of view toward the southern constellation Cetus. The pronounced void on one side of the galaxy's disk recalls for some its popular name, the Needle's Eye galaxy. Many background galaxies are visible in this sharp galaxy portrait, including the remarkable string of four galaxies just below and left of NGC 247 known as Burbidge's Chain. Burbidge's Chain galaxies are about 300 million light-years distant. NGC 247 itself is part of the Sculptor Group of galaxies along with shiny spiral NGC 253.
© Eric Benson