Karachentsev's catalog of isolated pairs in the northern sky has been used to examine the features of a sample of double galaxies of EE type. If the members of the pairs are elliptical or lens-shaped galaxies, one can determine the average values for the kinematic and dynamic characteristics. For systems having components of EE and E-SO types one can calculate the parameters of the limiting zero-velocity surfaces within the framework of a restricted three-body problem for the spherically symmetrical case of the density distribution in the companions. The results are presented as preliminary.
Sternberg State Institute of Astronomy, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
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