Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: SDSS J142625.71+575218.3, a Prototype for a New Class of Variable White
  Dwarf   We present the results of a search for pulsations in six of the recently
discovered carbon-atmosphere white dwarf ("hot DQ") stars. Based on our
theoretical calculations, the star SDSS J142625.71+575218.3 is the only object
expected to pulsate. We observe this star to be variable, with significant
power at 417.7 s and 208.8 s (first harmonic), making it a strong candidate as
the first member of a new class of pulsating white dwarf stars, the DQVs. Its
folded pulse shape, however, is quite different from that of other white dwarf
variables, and shows similarities with that of the cataclysmic variable AM CVn,
raising the possibility that this star may be a carbon-transferring analog of
AM CVn stars. In either case, these observations represent the discovery of a
new and exciting class of object.

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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: stat
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The categories of this paper are: nlin
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The categories of this paper are: hep-th
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The categories of this paper are: gr-qc
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The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: atom-ph
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The categories of this paper are: eess
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The categories of this paper are: econ
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The categories of this paper are: alg-geom
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The categories of this paper are: quant-ph
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
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The categories of this paper are: math