Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Selected new results on pulsating variable stars   Recent progress in the studies of pulsating variable stars is summarized from
an observational point of view. A number of unexpected phenomena have been
revealed in the case of pulsators in the classical instability strip. These
discoveries -- lacking theoretical explanation yet -- make pulsating stars more
valuable objects for astrophysics than before. The emphasis is laid on Cepheids
of all kind and RR Lyrae type variables, as well as binarity among pulsating
variable stars.

17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph