Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A rich bounty of AGN in the 9 square degree Bootes survey: high-z
  obscured AGN and large-scale structure   We use observations from the 9 square degree multiwavelength survey in Bootes
to identify hundreds of obscured active galactic nuclei (AGN) with high
redshifts (z > 0.7), luminosities (L_bol > 10^45 ergs/s), and moderate
obscuring columns (N_H > 10^22 cm^-2), and to measure the clustering properties
of X-ray AGN at z > 1. In the Bootes region, shallow (5 ks) Chandra X-ray
observations have detected ~4,000 X-ray sources, and the same region has been
mapped with deep optical imaging and by Spitzer IRAC, which detects ~300,000
point sources, of which ~30,000 have detections in all four IRAC bands, for
which we can select AGN on the basis of their mid-IR colors. With the
MMT/Hectospec we have obtained modest resolution optical spectra for about half
the X-ray sources (out to z > 3) and ~20,000 galaxies (out to z = 0.7). With
this multiwavelength data we select >400 AGN per square degree (compared to 12
per square degree from SDSS). Among a sample of IRAC-selected AGN we identify
641 candidate obscured objects based on their R band and IRAC luminosities. We
use X-ray stacking techniques to verify that they are obscured AGN and measure
their absorbing column densities. We also measure the three-dimensional
two-point correlation function for X-ray selected AGN.

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The categories of this paper are: stat
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-ex
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: math
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The categories of this paper are: eess
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The categories of this paper are: hep-th
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The categories of this paper are: solv-int
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The categories of this paper are: q-alg
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The categories of this paper are: math-ph
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The categories of this paper are: nlin
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The categories of this paper are: adap-org
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The categories of this paper are: funct-an
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The categories of this paper are: atom-ph