Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The HARPS search for southern extra-solar planets. XXXIV. A planetary
  system around the nearby M dwarf GJ163, with a super-Earth possibly in the
  habitable zone   The meter-per-second precision achieved by today velocimeters enables the
search for 1-10 M_Earth planets in the habitable zone of cool stars. This paper
reports on the detection of 3 planets orbiting GJ163 (HIP19394), a M3 dwarf
monitored by our ESO/HARPS search for planets. We made use of the HARPS
spectrograph to collect 150 radial velocities of GJ163 over a period of 8
years. We searched the RV time series for coherent signals and found 5 distinct
periodic variabilities. We investigated the stellar activity and casted doubts
on the planetary interpretation for 2 signals. Before more data can be acquired
we concluded that at least 3 planets are orbiting GJ163. They have orbital
periods of P_b=8.632+-0.002, P_c=25.63+-0.03 and P_d=604+-8 days and minimum
masses msini = 10.6+-0.6, 6.8+-0.9, and 29+-3 M_Earth, respectively. We hold
our interpretations for the 2 additional signals with periods P_(e)=19.4 and
P_(f)=108 days. The inner pair presents an orbital period ratio of 2.97, but a
dynamical analysis of the system shows that it lays outside the 3:1 mean motion
resonance. GJ163c, in particular, is a super-Earth with an equilibrium
temperature of T_eq = (302+-10) (1-A)^(1/4) K and may lie in the so called
habitable zone for albedo values (A=0.34-0.89) moderately higher than that of
Earth (A_Earth=0.2-0.3).

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The categories of this paper are: bayes-an
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The categories of this paper are: nlin
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The categories of this paper are: math-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: q-alg
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The categories of this paper are: stat
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The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn
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The categories of this paper are: dg-ga
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The categories of this paper are: patt-sol
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The categories of this paper are: q-bio
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The categories of this paper are: hep-th
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The categories of this paper are: econ
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-ex