Problem of planetary systems existence. II. Expected properties and the first results of the search

Abstract

Specialities of planets composition, their physical properties and classification are discussed. For planetary systems of different ages analysis of coming configurations is carried out. It is shown, that there are two principal vicinities on the diagram “mass - big axes” for the planets. The first vicinity corresponds to formed planets, and the second one with “young” forming planetary systems, where planets migration from formation zone to nearest environments of star is assumed. The main data on detected protoplanetary and planetary systems of Galaxy are presented.