Table 1: Overview over the major heating and cooling processes in PDR physics.
Heating Cooling
photoelectric heating (dust & PAH) [CII] 158 $\mu $m
collisional de-excitation of vib. excited H2 [OI] 63, 145 $\mu $m
H2 dissociation [CI] 370, 610 $\mu $m
H2 formation [SiII] 35 $\mu $m
CR ionization CO, H2O, OH, H2
gas-grain collisions Ly $\alpha$, [OI], [FeII]
dissipation of turbulence gas-grain collisions

Source LaTeX | All tables | In the text