Parallax-based distances to Galactic HII regions
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The spiral structure of the Milky Way is not conclusive, even for the disc regions in the solar neighbourhood. In particular, the arm-like structures uncovered from the...
银河系的旋臂结构尚无定论，即便针对太阳邻域的银盘区域亦是如此。尤其值得注意的是，从……中所揭示的类臂状结构……
