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Simple Three-Integral Scale-Free Galaxy Models
N. W. Evans, R. M. Häfner, P. T. de Zeeuw
The Jeans equations give the second moments or stresses required to support a stellar population against the gravity field. A general solution of the Jeans equations for arbitrary…
Self-Consistent, Axisymmetric Two_Integral Models of Elliptical Galaxies with embedded Nuclear Discs
Frank C. van den Bosch, P. Tim de Zeeuw
Recently, observations with the Hubble Space Telescope have revealed small stellar discs embedded in the nuclei of a number of ellipticals and S0s. In this paper we construct two-i…
Scale-free dynamical models for galaxies: flattened densities in spherical potentials
Jos H. J. de Bruijne, Roeland P. van der Marel, P. Tim de Zeeuw
This paper presents two families of phase-space distribution functions (DFs) that generate scale-free spheroidal mass densities in scale-free spherical potentials. The `case I' DFs…