All Tables

Table 1: Infrared pumping approximations.
Table 2: Physical parameters used to model the PDR of the molecular cloud S140.
Table 3: Gas phase abundances relative to H nuclei.
Table 4: Mean intensities of the first rotational transitions of ortho and para H_2O (in ${\rm erg~cm^{-2}~s^{-1}~sr^{-1}}$ ) and (last column) optical depth at line centre for model PDR-c.