Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stellar Streams in the Galactic Disk: Predicted Lifetimes and Their
  Utility in Measuring the Galactic Potential   In this paper, we present a holistic view of the detection, characterization,
and origin of stellar streams in the disk of a simulated Milky Way-like galaxy.
The star-by-star simulation of the Galaxy evolves stars born in clusters in a
realistic galactic potential that includes spiral arms, a bar, and giant
molecular clouds over $5$ Gyr. We first devise a new hybrid method to detect
stellar streams that combines phase space density information along with the
action-angle space spanned by stars in our simulation. We find that streams'
progenitor star clusters and associations are all preferentially higher-mass
($>1000$ $M_{\odot}$) and young ($< 1$ Gyr). Our stream-finding method predicts
that we might be able to find anywhere from $1$ to $10$ streams with 6D
\textit{Gaia} DR2 data in the solar neighborhood alone. The simulation suggests
that streams are sensitive to the initial dynamical state of clusters,
accumulated energy gain from encounters with giant molecular clouds (GMCs), and
present-day actions. We investigate what we can learn about the Galactic
potential by studying the feasiblity of rewinding stellar streams back to their
origin. Even with perfect information about the non-axisymmetric components
(spiral arms, bar) of the galactic potential, the stochastic GMC population
makes backwards integration impossible beyond one or two disk orbital times.
Streams are also sensitive to the properties of the bar, but fairly insensitive
to the properties of the non-transient two-armed spiral in our simulation.
Finally we predict that around $10$ to $30$ stellar streams should be
detectable with \textit{Gaia}'s 10-year end-of-mission data. There are many
more stellar streams waiting to be discovered in the Galactic disk, and they
could hold clues about the history of the Galaxy for the past Gyr.

3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
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The categories of this paper are: cond-mat
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The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
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The categories of this paper are: nucl-th
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The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
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The categories of this paper are: hep-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: math
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The categories of this paper are: gr-qc
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The categories of this paper are: adap-org
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The categories of this paper are: bayes-an
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The categories of this paper are: cs