Abstract
I have calculated ultraviolet photoionization cross sections for N2 and CO in the gas phase and the differential cross sections for oriented molecules. The gas-phase results agree well with recent data and display shape resonances, predicted by Dehmer and Dill, about 1 Ry above threshold for certain levels. For oriented molecules I find distinctive angular distributions which could be used to identify levels or determine the bond geometry of molecules adsorbed at surfaces.