Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Are RRab stars fully radial?   Thanks to the space missions CoRoT and Kepler new oscillation frequencies
have been discovered in the Fourier spectra of Blazhko RR Lyrae stars. The
period doubling (PD) yields half-integer frequencies between the fundamental
mode and its harmonics. In many cases the first and/or second radial overtone
frequencies also appear temporally. Some stars show extra frequencies that were
identified as potential non-radial modes. We show here that all these
frequencies can be explained by pure radial pulsation as linear combinations of
the frequencies of radial fundamental and overtone modes.

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The categories of this paper are: hep-th
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The categories of this paper are: adap-org
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
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The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
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The categories of this paper are: econ
34
The categories of this paper are: chem-ph
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The categories of this paper are: math
29
The categories of this paper are: funct-an
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The categories of this paper are: hep-lat
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The categories of this paper are: q-fin
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The categories of this paper are: supr-con