Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: PM J03338+3320: Long-Period Superhumps in Growing Phase Following a
  Separate Precursor Outburst   We observed the first-ever recorded outburst of PM J03338+3320, the
cataclysmic variable selected by proper-motion survey. The outburst was
composed of a precursor and the main superoutburst. The precursor outburst
occurred at least 5 d before the maximum of the main superoutburst. Despite
this separation, long-period superhumps were continuously seen between the
precursor and main superoutburst. The period of these superhumps is longer than
the orbital period by 6.0(1)% and can be interpreted to reflect the dynamical
precession rate at the 3:1 resonance for a mass ratio of 0.172(4). These
superhumps smoothly evolved into those in the main superoutburst. These
observations provide the clearest evidence that the 3:1 resonance is triggered
by the precursor outburst, even if it is well separated, and the resonance
eventually causes the main superoutburst as predicted by the thermal-tidal
instability model. The presence of superhumps well before the superoutburst
cannot be explained by alternative models (the enhanced mass-transfer model and
the pure thermal instability model) and the present observations give a clear
support to the thermal-tidal instability model.

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The categories of this paper are: cond-mat
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The categories of this paper are: q-alg
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The categories of this paper are: cmp-lg
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The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: mtrl-th
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The categories of this paper are: dg-ga
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The categories of this paper are: ao-sci
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The categories of this paper are: econ
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: gr-qc
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The categories of this paper are: math
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The categories of this paper are: q-bio
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The categories of this paper are: acc-phys