THE COMPLETE INFRARED VIEW OF ACTIVE GALACTIC NUCLEI FROM THE 70 MONTH SWIFT/BAT CATALOG

We systematically investigate the near- to far-infrared (FIR) photometric properties of a nearly complete sample of local active galactic nuclei (AGNs) detected in the Swift/Burst Alert Telescope (BAT) all-sky ultra-hard X-ray (14-195 keV) survey. Out of 606 non-blazar AGNs in the Swift/BAT 70 month...

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Bibliographic Details
Published in:The Astrophysical journal 2017-01, Vol.835 (1), p.74
Main Authors: Ichikawa, Kohei, Ricci, Claudio, Ueda, Yoshihiro, Matsuoka, Kenta, Toba, Yoshiki, Kawamuro, Taiki, Trakhtenbrot, Benny, Koss, Michael J.
Format: Article
Language:English
Subjects:
Active galactic nuclei
Astrophysics
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
BOLOMETERS
Color
CORRELATIONS
COSMIC DUST
EMISSION
ENERGY SPECTRA
galaxies: active
galaxies: nuclei
GALAXY NUCLEI
HARD X RADIATION
Infrared photometry
INFRARED SPECTRA
infrared: galaxies
LUMINOSITY
Observatories
Photometry
Sky surveys (astronomy)
Space telescopes
Spectral energy distribution
Star formation
STARS
TELESCOPES
X-RAY GALAXIES
X-rays: galaxies
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Summary:We systematically investigate the near- to far-infrared (FIR) photometric properties of a nearly complete sample of local active galactic nuclei (AGNs) detected in the Swift/Burst Alert Telescope (BAT) all-sky ultra-hard X-ray (14-195 keV) survey. Out of 606 non-blazar AGNs in the Swift/BAT 70 month catalog at high galactic latitudes of , we obtain IR photometric data of 604 objects by cross-matching the AGN positions with catalogs from the WISE, AKARI, IRAS, and Herschel infrared observatories. We find a good correlation between the ultra-hard X-ray and mid-IR luminosities over five orders of magnitude ( ). Informed by previous measurements of the intrinsic spectral energy distribution of AGNs, we find FIR pure-AGN candidates whose FIR emission is thought to be AGN-dominated with low star-formation activity. We demonstrate that the dust covering factor decreases with the bolometric AGN luminosity, confirming the luminosity-dependent unified scheme. We also show that the completeness of the WISE color-color cut in selecting Swift/BAT AGNs increases strongly with 14-195 keV luminosity.
ISSN:0004-637X
1538-4357
DOI:10.3847/1538-4357/835/1/74