Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Astrometric Detection of Giant Planets Around Nearby M Dwarfs: The Gaia
  Potential   [abridged] We carry out numerical simulations to gauge the Gaia potential for
precision astrometry of exoplanets orbiting a sample of known dM stars within
30 pc from the Sun. (1) It will be possible to accurately determine orbits and
masses for Jupiter-mass planets with orbital periods in the range 0.2<P<6.0 yr
and with an astrometric signal-to-noise ratio > 10. Given present-day estimates
of the planet fraction f_p around M dwarfs, 100 giant planets could be found by
Gaia around the sample. Comprehensive screening by Gaia of the reservoir of
4x10^5 M dwarfs within 100 pc could result in 2600 detections and as many as
500 accurate orbit determinations. The value of f_p could then be determined
with an accuracy of 2%, an improvement by over an order of magnitude with
respect to the most precise values available to-date; (2) in the same period
range, inclination angles corresponding to quasi-edge-on configurations will be
determined with enough precision (a few percent) so that it will be possible to
identify intermediate-separation planets which are potentially transiting
within the errors. Gaia could alert us of the existence of 10 such systems.
More than 250 candidates could be identified assuming solutions compatible with
transit configurations within 10% accuracy, although a large fraction of these
(85%) could be false positives; (3) for well-sampled orbits, the uncertainties
on planetary ephemerides, separation and position angle, will degrade at
typical rates of < 1 mas/yr and < 2 deg/yr, respectively; (4) planetary phases
will be measured with typical uncertainties of several degrees, resulting
(under the assumption of purely scattering atmospheres) in phase-averaged
errors on the phase function of 0.05, and expected uncertainties in the
determination of the emergent flux of intermediate-separation (0.3<a<2.0 AU)
giant planets of 20%. [abridged]

34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
9
The categories of this paper are: nlin