Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The full $\mathit{Kepler}$ phase curve of the eclipsing hot white dwarf
  binary system KOI-964   We analyze the full $\mathit{Kepler}$ phase curve of KOI-964, a binary system
consisting of a hot white dwarf on an eclipsing orbit around an A-type host
star. Using all 18 quarters of long-cadence photometry, we carry out a joint
light curve fit and obtain improved phase curve amplitudes, occultation depths,
orbital parameters, and transit ephemeris over the previous results of Carter
et al. 2011. A periodogram of the residuals from the phase curve fit reveals an
additional stellar variability signal from the host star with a characteristic
period of $0.620276\pm0.000011$ days and a full amplitude of $24\pm2$ ppm. We
also present new Keck/HIRES radial velocity observations which we use to
measure the orbit and obtain a mass ratio of $q=0.106\pm0.012$. Combining this
measurement with the results of a stellar isochrone analysis, we find that the
masses of the host star and white dwarf companion are $2.23\pm0.12\,M_{\odot}$
and $0.236^{+0.028}_{-0.027}\,M_{\odot}$, respectively. The effective
temperatures of the two components are $9940^{+260}_{-230}$ K and $15080\pm400$
K, respectively, and we determine the age of the system to be
$0.21^{+0.11}_{-0.08}$ Gyr. We use the measured system properties to compute
predicted phase curve amplitudes and find that while the measured Doppler
boosting and mutual illumination components agree well with theory, the
ellipsoidal distortion amplitude is significantly underestimated. We detail
possible explanations for this discrepancy, including interactions between the
dynamical tide of the host star and the tidal bulge and possible
non-synchronous rotation of the host star.

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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio
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The categories of this paper are: supr-con
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The categories of this paper are: nlin
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The categories of this paper are: gr-qc
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The categories of this paper are: ao-sci
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The categories of this paper are: chem-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: patt-sol
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The categories of this paper are: stat
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The categories of this paper are: math
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-th
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The categories of this paper are: math-ph
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The categories of this paper are: cond-mat