Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: NGC6822: detection of variable stars with ISIS2.1   Preliminary results on the detection of a conspicuous number of variable
stars in the dwarf irregular galaxy NGC 6822 are presented. We stress the need
for packages specifically designed to the search of variables in distant
galaxies and/or when data are affected by a high level of crowding.

12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
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
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess