Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Orbits of Terrestrial Planets in the Habitable Zones of Known
  Exoplanetary Systems   We show that terrestrial planets could survive in variously restricted
regions of the habitable zones of 47 Ursae Majoris, Epsilon Eridani, and Rho
Coronae Borealis, but nowhere in the habitable zones of Gliese 876 and Upsilon
Andromedae. The first three systems between them are representative of a large
proportion of the 90 or so extrasolar planetary systems discovered by mid-2002,
and thus there are many known systems worth searching for terrestrial planets
in habitable zones. We reach our conclusions by launching putative Earth-mass
planets in various orbits and following their fate with a mixed-variable
symplectic integrator.

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The categories of this paper are: dg-ga
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The categories of this paper are: plasm-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: bayes-an
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-alg
1
The categories of this paper are: cs
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The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
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The categories of this paper are: nucl-th
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The categories of this paper are: math-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: q-fin
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The categories of this paper are: solv-int