Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: EFOSC2 Spectroscopy of SWIRE-CDFS Galaxies   We present the optical spectra of a sample of 34 SWIRE-CDFS sources observed
with EFOSC2 on the ESO 3.6m Telescope. We have used the spectra and
spectroscopic redshifts to validate our photometric redshift codes and SED
template fitting methods. 12 of our sources are Infrared Luminous Galaxies. Of
these, five belong to the class of ULIRGs and one to the class of HLIRGs with
evidence of both an AGN and starburst component contributing to their extreme
infrared luminosity for 3, starburst contributing for 1 and AGN contributing
for 2 of them.

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The categories of this paper are: chao-dyn
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The categories of this paper are: eess
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The categories of this paper are: econ
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: comp-gas
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-alg
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The categories of this paper are: nlin
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat