Some flattened isothermal models of galaxies
Abstract
A family of exactly selfgravitating, collisionless stellar systems with axial symmetry is presented. Each model exhibits quasiGaussian random motions that vary not at all with distance along any given ray from its center, and the circular speed in its equatorial plane is likewise independent of the radius. In essence, these models thicken the infinitesimally thin Zang disks to include the classical sec hsquared z planeparallel solutions of Spitzer and Camm; the surprise here is that such alterations remain exact to arbitrary thicknesses. Twocomponent versions of these scalefree models yield some instructive diskhalo systems, including the ones proposed lately by Richstone and Miller. Their shapes and velocity fields are described in some detail.
 Publication:

The Astrophysical Journal
 Pub Date:
 August 1982
 DOI:
 10.1086/160190
 Bibcode:
 1982ApJ...259..535T
 Keywords:

 Galactic Structure;
 Stellar Motions;
 Stellar Systems;
 Astronomical Models;
 Symmetry;
 Velocity Distribution;
 Astrophysics