Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Gas-poor Planetesimal Capture Model for the Formation of Giant Planet
  Satellite Systems   Assuming that an unknown mechanism (e.g., gas turbulence) removes most of the
subnebula gas disk in a timescale shorter than that for satellite formation, we
develop a model for the formation of regular (and possibly at least some of the
irregular) satellites around giant planets in a gas-poor environment. In this
model, which follows along the lines of the work of Safronov et al. (1986),
heliocentric planetesimals collide within the planet's Hill sphere and generate
a circumplanetary disk of prograde and retrograde satellitesimals extending as
far out as $\sim R_H/2$. At first, the net angular momentum of this
proto-satellite swarm is small, and collisions among satellitesimals leads to
loss of mass from the outer disk, and delivers mass to the inner disk (where
regular satellites form) in a timescale $\lesssim 10^5$ years. This mass loss
may be offset by continued collisional capture of sufficiently small $< 1$ km
interlopers resulting from the disruption of planetesimals in the feeding zone
of the giant planet. As the planet's feeding zone is cleared in a timescale
$\lesssim 10^5$ years, enough angular momentum may be delivered to the
proto-satellite swarm to account for the angular momentum of the regular
satellites of Jupiter and Saturn.(abridged)

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The categories of this paper are: eess
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The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
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The categories of this paper are: acc-phys
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The categories of this paper are: cs
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
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The categories of this paper are: alg-geom
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The categories of this paper are: q-bio
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The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
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The categories of this paper are: funct-an
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The categories of this paper are: patt-sol
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The categories of this paper are: bayes-an
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The categories of this paper are: physics
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The categories of this paper are: nucl-ex