Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cataclysmic Variables   Cataclysmic variables are binary stars in which a relatively normal star is
transferring mass to its compact companion. This interaction gives rise to a
rich range of behaviour, of which the most noticeable are the outbursts that
give the class its name. Novae belong to the class, as do the less well known
dwarf novae and magnetic systems. Novae draw their energy from nuclear
reactions, while dwarf novae rely on gravity to power their smaller eruptions.
All the different classes of cataclysmic variable can be accommodated within a
single framework and this article will describe the framework, review the
properties of the main types of system and discuss models of the outbursts and
of the long-term evolution.

34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph