Predicting reliable H${}_2$ column density maps from molecular line data using machine learning

Yoshito Shimajiri, Yasutomo Kawanishi, Shinji Fujita +13

The total mass estimate of molecular clouds suffers from the uncertainty in the H${}_2$-CO conversion factor, the so-called $X_{\mathrm{CO}}$ factor, which is used to convert the ${}^{12}$C…