Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Explaining the Orbits of the Galactic Center S-Stars   The young stars near the supermassive black hole at the galactic center
follow orbits that are nearly random in orientation and that have an
approximately thermal distribution of eccentricities, N(e) ~ e. We show that
both of these properties are a natural consequence of a few million years'
interaction with an intermediate-mass black hole (IBH), if the latter's orbit
is mildly eccentric and if its mass exceeds approximately 1500 solar masses.
Producing the most tightly-bound S-stars requires an IBH orbit with periastron
distance less than about 10 mpc. Our results provide support for a model in
which the young stars are carried to the galactic center while bound to an IBH,
and are consistent with the hypothesis that an IBH may still be orbiting within
the nuclear star cluster.

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The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
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The categories of this paper are: supr-con
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The categories of this paper are: funct-an
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The categories of this paper are: acc-phys
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The categories of this paper are: econ
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
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The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
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The categories of this paper are: comp-gas
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The categories of this paper are: dg-ga
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The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
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The categories of this paper are: q-alg
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The categories of this paper are: atom-ph