Fedorov P. The XPM catalogue as an independent realization of the extragalactic reference system of coordinates in the optical and near infrared ranges of wavelengths

The thesis is devoted to creating a new coordinate system in the optical and near infrared wavelength range, independent from the HCRF. Two catalogues of proper motions of stars were created for this goal. One of them (the XPM catalogue) contains the HCRF positions and the absolute proper motions of more than 314 million stars and covers the whole celestial sphere. Another catalogue (the XC1) contains the HCRF proper motions of stars in 255 fields of the northern sky, in the center each of them the ICRF source is located. The coordinate axis, which determined by the XPM catalogue, no rotate with respect to extragalactic sources DR7, LQAC and ICRF at the level of accuracy of 0.2 mas/year, and therefore they can be considered as an independent realization of the International Celestial Reference System (ICRS) in the optical and near infrared wavelength range. And data of the XC1 catalogue provide an unique opportunity to test the XPM system. On the other hand, the problem of determining the parameters of residual rotation of the HCRF relatively to the extragalactic objects is solved by comparing two independent realizations of the ICRS. The rotation parameters obtained from the comparison indicate that the HCRF has a significant rotation around the axis directed to the pole of the world, which reaches about -2 mas/year. In addition, the appreciable magnitude equations were found in almost all HCRF catalogues, which contain the proper motions of stars. Some kinematic parameters of the Galaxy, particularly a correction to a constant of the lunar-solar precession and the angular velocity of the Galaxy rotation have been obtained from XPM proper motions with use the Ogorodnikov-Milne model.