Distribution of HII regions in disk galaxies

It is known that interstellar gas has a fractal structure in a wide range of spatial scales with a fractal dimension that seems to be a constant around D_f_~2.7. It is expected...已知星际气体在宽泛的空间尺度范围内具有分形结构（fractal structure），其分形维数（fractal dimension）近似恒定为D_f~2.7。据推测……