Minimum velocity dispersion in stable stellar disks. Numerical simulations

  title={Minimum velocity dispersion in stable stellar disks. Numerical simulations},
  author={Alexander V. Khoperskov and Anatolii Vladimirovich Zasov and N. V. Tyurina},
  journal={Astronomy Reports},
N-body dynamical simulations are used to analyze the conditions for the gravitational stability of a three-dimensional stellar disk in the gravitational field of two rigid spherical components—a bulge and halo whose central concentrations and relative masses vary over wide ranges. The number of point masses N in the simulations varies from 40 to 500 000 and the evolution of the simulated systems is followed over 10–20 rotation periods of the outer edge of the disk. The initially unstable disks… 
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