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Nuclear Disks Embedded in Elliptical Galaxies

  • Frank C. Van Den Bosch
  • Tim De Zeeuw
Conference paper
Part of the International Astronomical Union / Union Astronomique Internationale book series (IAUS, volume 171)

Abstract

The Hubble Space Telescope has discovered a number of ellipticals and S0’s with small nuclear, stellar disks (eg. van den Bosch et al. 1994, AJ, 108, 1579). The kinematics of these disks may allow a derivation of the central mass density of the host galaxy, in much the same way as is possible with ionized gas disks (e.g. M87; Harms et al. 1994, ApJ, 435, L35). In order to understand the kinematic signatures of these disks, we have constructed two-integral, axisymmetric models of ellipticals with nuclear stellar disks. We use the method developed by Hunter & Qian (1993, MNRAS, 262, 401) to calculate f(E, L z), from which we derive the velocity profiles (VPs). Depending on the choice of the odd part of the DF, one can construct a large variety of models including some with counter-rotating cores.

Copyright information

© Springer Science+Business Media Dordrecht 1996

Authors and Affiliations

  • Frank C. Van Den Bosch
    • 1
  • Tim De Zeeuw
    • 1
  1. 1.Leiden ObservatoryLeidenThe Netherlands

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