Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2010-07-25
Astrophysics and Space Science Library, 2006, v.337, p.337-344 (In: Astrophysical Disks / Alexei M. Fridman, et al (eds.). Pub
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
7 pages 6 figures, conference: 'Progress in Study of Astrophysical Disks: Collective and Stochastic Phenomena and Computationa
Scientific paper
We present results of numerical modeling made for the galactic stellar and stellar-gas disk embedded in the spherical halo and bulge. The stellar disk is simulated by N-body system, the equations of hydrodynamics are solved by TVD-method. We used TREEcode-algorithm for calculation of a self-gravity in stellar and gaseous components. The possibility of bars birth in a hot stellar disk because of gravitational instability of a cold gas component is investigated. The conditions of occurrence lopsided-galaxies from a axisymmetric disk as a result of gravitational instability are explored. The self-consistent models of double bars are constructed and the dynamical stability of these structures is discussed.
Khoperskov Alexander V.
Khrapov Sergej
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