Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Kinematics of Planetary Nebulae in M 51's Tidal Tail   The galaxy pair NGC 5194/95 (M 51) is one of the closest and best known
interacting systems. Despite its notoriety, however, many of its features are
not well studied. Extending westward from NGC 5195 is a low surface brightness
tidal tail, which can only be seen in deep broadband exposures. Our previous [O
III] lambda 5007 planetary nebulae (PN) survey of M 51 recovered this tidal
tail, and presented us with a opportunity to study the kinematics of a galaxy
interaction in progress. We report the results of a spectroscopy survey of the
PN, aimed at determining their kinematic properties. We then use these data to
constrain new self-consistent numerical models of the system.

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The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: math
1
The categories of this paper are: cs
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The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-th
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The categories of this paper are: comp-gas
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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: hep-lat
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The categories of this paper are: hep-ex
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The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an