Pysarenko A. Internal structure and evolution of substars

The object: evolution of substellar objects wіth an arbіtrary chemіcal composіtіon and masses 0.01Ms < M < 0.08Ms and their internal structure; the goals: creation of a base physical model of substars that makes it possіble to calculate substar's internal structure and evolution; the methods: analytical calculations, numerical methods, numerical simulation; novelty: the equation of state of matter with arbitrary power of ionisation and degeneracy of electron gas taking into account correlation effects in nonideal hydrogen-helium plasma; new adiabatic coefficients for calculation of temperature, density and parameter of degeneracy of electron gas gradients: evolutional model of substellar objects with arbitrary chemical composition was constructed; internal structure of substars was calculated and described.