Cloud-scale molecular gas properties in 15 galaxies

We measure the velocity dispersion, {sigma}, and surface density, {Sigma}, of the molecular gas in nearby galaxies from CO spectral line cubes with spatial resolution 45-120pc,...我们利用空间分辨率为45~120秒差距的CO谱线立方体数据，对邻近星系中分子气体的速度弥散（velocity dispersion）与面密度（surface density）开展了测量，其中速度弥散记为{σ}，面密度记为{Σ}……