Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A very massive spectroscopic binary in the LH 54 OB association in the
  LMC   We announce the discovery of a new early-type, double-lined spectroscopic
binary in the LH 54 OB association in the LMC. We present a V light curve and
radial velocities. We investigate the possible configurations of the system,
concluding that it probably contains the most massive star measured at the
present, with a mass (in solar units) of the order of 100, while its companion
has approximately 50.

17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th