Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Binary stars in globular clusters: detection of a binary sequence in NGC
  2808?   A CCD V,V-I colour-magnitude diagram (CMD) of the Galactic globular cluster
NGC 2808 has been obtained with the ESO-NTT, reaching down to V ~ 24. The
highly populated Main Sequence (MS) presents a significant broadening redward
to the MS ridge line, larger than expected from photometric errors alone, which
could be interpreted as due to binary candidates.

21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio