Использование модифицированного метода Шварцшильда для построения фазовой модели Галактики

The article contains the description of the improved Schwarzschild's method, specific of its work and the constructed phase model based on Galactic potential by Flynn et al. It is shown that the phase models of stellar systems and corresponding discrete systems which are used as input data in N-body simulations can be constructed by this method. The new algorithm for dividing the model space into cylindrical cells instead of the rectangular parallelepiped cells is described. This algorithm gives advantages in the modelling of the central parts of the system. Another innovation is changing of the algorithm for finding the weights of orbits: instead of using the simplex-method we use the iterative algorithm which allows using more orbits and cells and provides the more smoothed model. The constructed phase model of Galactic disk and its central parts after discretization was checked for equilibrium and stability by means N-body simulations. The model parameters at the first few revolutions rather deviate of initial values and then stabilized in new equilibrium state.