Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Near-infrared identification of the counterpart to X1908+075: a new
  OB-supergiant X-ray binary   We report the near-infrared (IR) identification of the likely counterpart to
X1908+075, a highly-absorbed Galactic X-ray source recently suspected to belong
to the rare class of OB supergiant-neutron star binary systems. Our JHKs-band
imaging of the field reveals the existence within the X-ray error boxes of a
near-IR source consistent with an early-type star lying at d=7 kpc and
suffering A(V)=16 mag of extinction, the latter value being in good agreement
with the hydrogen column density derived from a modelling of the X-ray
spectrum. Our follow-up, near-IR spectroscopic observations confirm the nature
of this candidate and lead to a late O-type supergiant classification, thereby
supporting the identification of a new Galactic OB-supergiant X-ray binary.

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The categories of this paper are: stat
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The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
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The categories of this paper are: econ
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: supr-con
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The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
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The categories of this paper are: funct-an
2
The categories of this paper are: math