NGC 247 和朋友們
NGC 247 and Friends
來源:Eric Benson|發表日期:2024-09-05
NGC 247 直徑約 7 萬光年,是一個比銀河系還小的螺旋星系。據測量,它的距離只有 1100 萬光年,但它就在附近。從我們的視角看,它幾乎是邊緣傾斜的,在這個望遠鏡視場中,它的主要方向是南側的鯨魚座。星系盤一側明顯的空洞讓一些人想起了它的俗名--針眼星系。在這幅清晰的星系肖像中,可以看到許多背景星系,其中包括 NGC 247 左下方由四個星系組成的非凡星系群,它們被稱為伯比奇星系鏈(Burbidge's Chain)。伯比奇鏈星系的距離約為 3 億光年。NGC 247 本身與閃亮的螺旋星系NGC 253 同屬於雕刻家星系群。
原文: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.
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