Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The 2011 February superoutburst of the dwarf nova SDSS
  J112003.40+663632.4   We report unfiltered photometry of SDSS J112003.40+663632.4 during the 2011
February outburst which revealed the presence of superhumps with peak-to-peak
amplitude of up to 0.22 magnitudes showing this to be an SU UMa type dwarf
nova. The outburst amplitude was 5.4 magnitudes above mean quiescence and it
lasted at least 12 days. The mean superhump period during the plateau phase was
Psh = 0.07057(19) d.

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The categories of this paper are: cs
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The categories of this paper are: mtrl-th
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The categories of this paper are: comp-gas
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The categories of this paper are: math
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The categories of this paper are: atom-ph
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The categories of this paper are: q-fin
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-lat
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The categories of this paper are: alg-geom
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The categories of this paper are: chao-dyn
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The categories of this paper are: physics
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-ex
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The categories of this paper are: econ
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The categories of this paper are: supr-con
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The categories of this paper are: dg-ga