PRIMUS + DEEP2: CLUSTERING OF X-RAY, RADIO, AND IR-AGNs AT z ∼ 0.7

ABSTRACT We measure the clustering of X-ray, radio, and mid-IR-selected active galactic nuclei (AGNs) at 0.2 < z < 1.2 using multi-wavelength imaging and spectroscopic redshifts from the PRIMUS and DEEP2 redshift surveys, covering seven separate fields spanning ∼10 deg 2 . Using the cross-corr...

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Bibliographic Details
Published in:The Astrophysical journal 2016-04, Vol.821 (1), p.55-55
Main Authors: Mendez, Alexander J., Coil, Alison L., Aird, James, Skibba, Ramin A., Diamond-Stanic, Aleksandar M., Moustakas, John, Blanton, Michael R., Cool, Richard J., Eisenstein, Daniel J., Wong, Kenneth C., Zhu, Guangtun
Format: Article
Language:English
Subjects:
Active galactic nuclei
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
Clustering
COMPARATIVE EVALUATIONS
DISTRIBUTION
GALACTIC EVOLUTION
Galaxies
galaxies: active
galaxies: evolution
GALAXY NUCLEI
INFRARED RADIATION
infrared: galaxies
MASS
Radio
radio continuum: galaxies
RADIO GALAXIES
RED SHIFT
STARS
Stellar mass
WAVELENGTHS
X rays
X-RAY GALAXIES
X-rays: galaxies
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Summary:ABSTRACT We measure the clustering of X-ray, radio, and mid-IR-selected active galactic nuclei (AGNs) at 0.2 < z < 1.2 using multi-wavelength imaging and spectroscopic redshifts from the PRIMUS and DEEP2 redshift surveys, covering seven separate fields spanning ∼10 deg 2 . Using the cross-correlation of AGNs with dense galaxy samples, we measure the clustering scale length and slope, as well as the bias, of AGNs selected at different wavelengths. Similar to previous studies, we find that X-ray and radio AGNs are more clustered than mid-IR-selected AGNs. We further compare the clustering of each AGN sample with matched galaxy samples designed to have the same stellar mass, star-formation rate (SFR), and redshift distributions as the AGN host galaxies and find no significant differences between their clustering properties. The observed differences in the clustering of AGNs selected at different wavelengths can therefore be explained by the clustering differences of their host populations, which have different distributions in both stellar mass and SFR. Selection biases inherent in AGN selection therefore determine the clustering of observed AGN samples. We further find no significant difference between the clustering of obscured and unobscured AGNs, using IRAC or Wide-field Infrared Survey Explorer colors or X-ray hardness ratio.
ISSN:0004-637X
1538-4357
DOI:10.3847/0004-637X/821/1/55