Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mass-to-light ratios in early-type galaxies and the dark matter content   The distribution of the radial trends of the mass-to-light ratios (M/L)
within an assorted sample of early-type galaxies is discussed. Three classes of
galaxies are identified according to their M/L gradients. Two such classes are
characterized by the presence or by the absence of a radial gradient of the
dark-matter (DM) distribution. A third class contains objects which are likely
undergoing interaction; they exhibit steep M/L gradients which are possibly the
result of a wrong assumption on their equilibrium conditions. Finally, a
possible correlation between DM content and morphological types is briefly
discussed.

30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph