HI4PI spectra and column density maps

Measurement of the Galactic neutral atomic hydrogen (HI) column density, NHI, and brightness temperatures, Tb, is of high scientific value for a broad range of astrophysical...对银河系中性原子氢（HI）柱密度（NHI）与亮温度（T_b）的测量，在广泛的天体物理学研究领域中具有极高的科学价值。