Dependence of the velocity dispersion on the radial coordinate in stellar disks of flat galaxies

Details Dependence of the velocity dispersion on the radial coordinate in stellar disks of flat galaxies Dependence of the velocity dispersion on the radial coordinate in stellar disks of flat galaxies

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992azh....69.1112m&link_type=abstract

Astronomicheskij Zhurnal (ISSN 0004-6299), vol. 69, no. 5, p. 1112-1116.

Astronomy and Astrophysics

Astronomy

2

Galactic Structure, Gravitational Collapse, Radial Velocity, Stellar Motions, Stellar Structure, Velocity Distribution

Scientific paper

Observations of stellar disks of flat galaxies and results of numerical experiments show that the characteristic scale length of the surface density does not exceed the scale length of the radial dispersion of star velocities. This result can be explained on the basis of the assumption that the entire disk is near the boundary of gravitational stability.

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