TY - JOUR

T1 - Numerical studies of instability of generalized polytropic models of stellar disks

AU - Sotnikova, N. Ya

AU - Смирнов, Антон Александрович

PY - 2017/11/27

Y1 - 2017/11/27

N2 - The distribution function for generalized polytropic models has been used to construct a series of numerical models of anisotropic disks. It has been shown with the help of simulation that such systems are unstable with respect to bar formation at any degree of radial elongation of star orbits. The result is completely at variance with the conclusions of earlier works, where similar models were studied. The pattern speeds and amplitudes of the forming bar were found, and the initial distributions of orbit precession rates were calculated. Such systems have been shown to fulfill all conditions for the onset of radial orbit instability, responsible for the formation of a slow bar.

AB - The distribution function for generalized polytropic models has been used to construct a series of numerical models of anisotropic disks. It has been shown with the help of simulation that such systems are unstable with respect to bar formation at any degree of radial elongation of star orbits. The result is completely at variance with the conclusions of earlier works, where similar models were studied. The pattern speeds and amplitudes of the forming bar were found, and the initial distributions of orbit precession rates were calculated. Such systems have been shown to fulfill all conditions for the onset of radial orbit instability, responsible for the formation of a slow bar.

UR - http://www.scopus.com/inward/record.url?scp=85039061025&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/929/1/012009

DO - 10.1088/1742-6596/929/1/012009

M3 - Conference article

AN - SCOPUS:85039061025

VL - 929

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012009

T2 - International Conference PhysicA.SPb 2016

Y2 - 1 November 2016 through 3 November 2016

ER -