Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Milky Way's Circular Velocity Curve to 60 kpc and an Estimate of the
  Dark Matter Halo Mass from Kinematics of ~2400 SDSS Blue Horizontal Branch
  Stars
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn