Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phase-space constraints on visible and dark matter distributions in
  elliptical galaxies   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.

9
The categories of this paper are: nlin
1
The categories of this paper are: cs
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg