Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: NGC 1605 is not a binary cluster   The open star cluster NGC 1605 has recently been reported to in fact consist
of two clusters (one intermediate-aged and one old) that merged via a flyby
capture. Here we show that Gaia data do not support this scenario. We also
report the serendipitous discovery of a new open cluster, Can Batll\'o 1, with
a similar age and distance.

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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: atom-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: math-ph
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The categories of this paper are: adap-org
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The categories of this paper are: mtrl-th
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-ex
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The categories of this paper are: ao-sci
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The categories of this paper are: bayes-an
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The categories of this paper are: math
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-bio
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The categories of this paper are: hep-lat