Orbital angular momenta of binary galaxies. The dependence on morphological type

Mean values of total and specific orbital angular momenta are systematically analyzed for binary galaxies of various types. The angular momenta of the pairs which include irregular galaxy are considerably smaller than those for pairs of other types. The distribution of orbital angular momenta of the pairs which include Sb galaxy and the distribution of the pairs which do not include Sb galaxy are very different. Most pairs which include Sb galaxy have orbital angular momenta of the order of our Galaxy proper rotation momentum