Vavilova I. Astroinformatics of the large-scale structures of the Universe

The purpose of the study is to determine the physical properties and to obtain the evolutionary dependencies between the main characteristics of the large-scale structures of the Universe (morphology, kinematics, dark matter content, the spatial distribution of galaxies at z < 0.1 and clusters of galaxies at z < 1.4) through the development, verification, and application of mathematical methods using the astroinformation resource of large databases of multiwavelength observations. The effectiveness of the developed Voronoi higher order tessellation method was proved for establishing the isolation criteria of sparsely populated groups. It allowed to obtain the dark matter content of such groups at z < 0.1 using the «mass–luminosity» ratio as well as other dynamic and kinematic parameters. A comprehensive study of the multiwavelength properties of isolated 2MIG galaxies with active nuclei on the scales of the near Universe was performed. It was shown that the masses of central supermassive black holes and the energy parameters in all spectral ranges are much smaller than those of galaxies located in dense environment. New algorithms for the application of machine learning methods are proposed a) for the binary automatic morphological classification of SDSS galaxies at z < 0.06; b) to reproduce the spatial distribution of galaxies behind the Zone of Avoidance of our Galaxy. An analysis of the existing astroinformational resource of multiwavelength studies of large-scale structures of the Universe was performed. A concept was developed and some scientific projects of the Ukrainian Virtual Observatory for study of our Galaxy were implemented.