Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Empirical velocity profiles for galactic rotation curves   A unified parametrization of the circular velocity, which accurately fits 850
galaxy rotation curves without needing in advance the knowledge of the luminous
matter components, nor a fixed dark matter halo model, is proposed. A notable
feature is that the associated gravitational potential increases with the
distance from the galaxy center, giving rise to a length scale indicating a
finite size of a galaxy, and after, the Keplerian fall-off of the parametrized
circular velocity is recovered according to Newtonian gravity, making possible
the estimation of the total mass enclosed by the galaxy.

36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc