Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Recovery of p-modes in the combined 2004-2005 MOST observations of
  Procyon   Procyon A, a bright F5 IV-V Sun-like star, is justifiably regarded as a prime
asteroseismological target. This star was repeatedly observed by MOST, a
specialized microsatellite providing long-term, non-interrupted broadband
photometry of bright targets. So far, the widely anticipated p modes eluded
direct photometric detection, though numerous independent approaches hinted for
the presence of signals in the f~0.5-1.5 mHz range. Implementation of an
alternative approach in data processing, as well as combination of the MOST
data from 2004 and 2005 (264189 measurements in total) helps to reduce the
instrumental noise affecting previous reductions, bringing the 3-sigma
detection limit down to ~5.5 part-per-million in the f=0.8-1.2 mHz range. This
enables to cross-identifiy 16 p-mode frequencies (though not their degrees)
which were previously detected via high-precision radial velocity measurements,
and provides an estimate of the large spacing, delta_nu =0.0540 mHz at f~1 mHz.
The relatively low average amplitude of the detected modes, a=5.8+/-0.6 ppm,
closely matches the amplitudes inferred from the ground-based spectroscopy and
upper limits projected from WIRE photometry. This also explains why such
low-amplitude signals eluded the direct-detection approach which exclusively
relied on the MOST 2004 (or 2005) data processed by a standard pipeline.

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The categories of this paper are: acc-phys
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The categories of this paper are: stat
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The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
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The categories of this paper are: q-bio
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The categories of this paper are: hep-ph
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The categories of this paper are: eess
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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: q-alg
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The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
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The categories of this paper are: econ
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The categories of this paper are: q-fin