Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transit Timing Observations from Kepler: III. Confirmation of 4 Multiple
  Planet Systems by a Fourier-Domain Study of Anti-correlated Transit Timing
  Variations   We present a method to confirm the planetary nature of objects in systems
with multiple transiting exoplanet candidates. This method involves a
Fourier-Domain analysis of the deviations in the transit times from a constant
period that result from dynamical interactions within the system. The
combination of observed anti-correlations in the transit times and mass
constraints from dynamical stability allow us to claim the discovery of four
planetary systems Kepler-25, Kepler-26, Kepler-27, and Kepler-28, containing
eight planets and one additional planet candidate.

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The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas
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The categories of this paper are: q-alg
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The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
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The categories of this paper are: alg-geom
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The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
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The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
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The categories of this paper are: econ
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The categories of this paper are: adap-org
1
The categories of this paper are: cs
2
The categories of this paper are: math
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The categories of this paper are: math-ph