Phase-space constraints on visible and dark matter distributions in elliptical galaxies

Details Phase-space constraints on visible and dark matter distributions in elliptical galaxies Phase-space constraints on visible and dark matter distributions in elliptical galaxies

1999-08-27

arxiv.org/abs/astro-ph/9908305v1

Astronomy and Astrophysics

Astrophysics

4 pages, to appear in "Galaxy Dynamics: from the Early Universe to the Present", ASP Conf. Series, eds. F. Combes, G. Mamon, V

Scientific paper

There are observational and theoretical indications that both the visible (stars) and the dark matter density distributions in elliptical galaxies increase significantly up to the galactic center. I present here some analytical results obtained with the aid of self-consistent, spherically symmetric two component galaxy models. These results suggest the possibility that this similar behavior could be a direct consequence of the structural and dynamical constraints imposed by the request of positivity of the phase-space distribution function of each density component.

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