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Analytical Galactic Models with Mild Central Cusps

Published online by Cambridge University Press:  01 August 2006

Tanja Rindler-Daller
Tanja Rindler-Daller*
Affiliation:
Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090 Vienna, Austria email: daller@astro.univie.ac.at
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Abstract

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We present a new class of spherical galactic models with mild central cusps whose distribution function (DF) and intrinsic velocity dispersion (IV) can be represented analytically in a unified way in terms of hypergeometric functions for a large number of parameters. This allows an easy comparison of these quantities for models having varying degrees of central cuspiness or outer density falloff. In particular, we study the models for the innermost regions of galaxies harbouring mild cuspy centers with or without supermassive black holes (SBH). Important properties infered from the observed behaviour of the velocity dispersions can be reproduced.

Keywords

galaxies: structuregalaxies: nucleigalaxies: kinematics and dynamics
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S235: Galaxy Evolution Across the Hubble Time , August 2006 , pp. 131
Copyright
Copyright © International Astronomical Union 2007

References

Dehnen, W. 1993, MNRAS 265, 250.CrossRefGoogle Scholar
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