On the generation of anisotropic velocity distributions in elliptical galaxies

Details On the generation of anisotropic velocity distributions in elliptical galaxies On the generation of anisotropic velocity distributions in elliptical galaxies

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.189..791s&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 189, Dec. 1979, p. 791-799.

Astronomy and Astrophysics

Astrophysics

6

Anisotropy, Elliptical Galaxies, Galactic Evolution, Galactic Rotation, Stellar Systems, Velocity Distribution, Astronomical Models, Astrophysics, Dynamic Models, Isotropy, Particle Motion, Perturbation Theory

Scientific paper

Models of elliptical galaxies have been generally successful in describing the observed overall light distribution in these systems. However, recent observations of elliptical galaxies have revealed lower systematic rotation in flattened systems than is predicted by existing models. The paper suggests that this discrepancy is due to the high degree of isotropy in the velocity distributions of the models. Flattened elliptical galaxies can be accounted for by an anistropic velocity distribution in an oblate system (Binney, 1978); this anisotropy is such that the velocity dispersions parallel to the principal plane exceed the dispersion perpendicular to the plane. Numerical experiments are described which demonstrate that such an anisotropic velocity distribution results from resonant scattering of stars by a rotating bar. Anisotropy results from a dynamic evolution where global bar-forming instabilities of a rotating cold system lead to the development of a hot axisymmetric slowly rotating stellar system.

Affiliated with

Also associated with

No associations

Rating

On the generation of anisotropic velocity distributions in elliptical galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On the generation of anisotropic velocity distributions in elliptical galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the generation of anisotropic velocity distributions in elliptical galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1449775