Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Growth of asteroids, planetary embryos and Kuiper belt objects by
  chondrule accretion   Chondrules are millimeter-sized spherules that dominate primitive meteorites
(chondrites) originating from the asteroid belt. The incorporation of
chondrules into asteroidal bodies must be an important step in planet
formation, but the mechanism is not understood. We show that the main growth of
asteroids can result from gas-drag-assisted accretion of chondrules. The
largest planetesimals of a population with a characteristic radius of 100 km
undergo run-away accretion of chondrules within ~3 Myr, forming planetary
embryos up to Mars sizes along with smaller asteroids whose size distribution
matches that of main belt asteroids. The aerodynamical accretion leads to
size-sorting of chondrules consistent with chondrites. Accretion of mm-sized
chondrules and ice particles drives the growth of planetesimals beyond the ice
line as well, but the growth time increases above the disk life time outside of
25 AU. The contribution of direct planetesimal accretion to the growth of both
asteroids and Kuiper belt objects is minor. In contrast, planetesimal accretion
and chondrule accretion play more equal roles for the formation of Moon-sized
embryos in the terrestrial planet formation region. These embryos are isolated
from each other and accrete planetesimals only at a low rate. However, the
continued accretion of chondrules destabilizes the oligarchic configuration and
leads to the formation of Mars-sized embryos and terrestrial planets by a
combination of direct chondrule accretion and giant impacts.

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The categories of this paper are: bayes-an
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The categories of this paper are: acc-phys
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The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
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The categories of this paper are: adap-org
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The categories of this paper are: eess
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The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
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The categories of this paper are: nlin
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The categories of this paper are: funct-an
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The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
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The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat