Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Analysis of the MOST light curve of the heavily spotted K2IV component
  of the single-line spectroscopic binary II Pegasi   Continuous photometric observations of the visible component of the
single-line, K2IV spectroscopic binary II Peg carried out by the MOST satellite
during 31 consecutive days in 2008 have been analyzed. On top of spot-induced
brightness modulation, eleven flares were detected of three distinct types
characterized by different values of rise, decay and duration times. The flares
showed a preference for occurrence at rotation phases when the most spotted
hemisphere is directed to the observer, confirming previous similar reports. An
attempt to detect a grazing primary minimum caused by the secondary component
transiting in front of the visible star gave a negative result. The brightness
variability caused by spots has been interpreted within a cold spot model. An
assumption of differential rotation of the primary component gave a better fit
to the light curve than a solid-body rotation model.

16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
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The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th