This paper contains some results of axisymmetric numerical calculations of the shock structures in steady supersonic jets in which there is significant radiative cooling. We find that the regularly spaced shock cells found in adiabatic jets still occur and that cooling can by itself induce shocks if it is fast enough. The [OI] emission from such jets is calculated and compared to that seen in stellar jets. The pattern of emission is very similar to that observed, which suggests that a number of the features of stellar jets can be understood in this way.