Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Proper motions of Upper Sco T-type candidates   We present new z- and H-band photometry and proper motion measurements for
the five candidate very-low-mass T-type objects we recently proposed to be
members of the nearest OB association to the Sun, Upper Scorpius. These new
data fail to corroborate our prior conclusions regarding their spectral types
and affiliation with the Upper Scorpius population. We conclude that we may be
in presence of a turnover in the mass function of Upper Sco taking place below
10-4 Jupiter masses, depending on the age assigned to Upper Sco and the models
used.

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The categories of this paper are: math
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The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
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The categories of this paper are: eess
24
The categories of this paper are: dg-ga
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The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
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The categories of this paper are: math-ph
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The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
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The categories of this paper are: stat
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The categories of this paper are: q-fin
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The categories of this paper are: alg-geom
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The categories of this paper are: adap-org