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We systematically investigate the near- (NIR) to far-infrared (FIR)photometric properties of a nearly complete sample of local active galacticnuclei (AGN) detected in the Swift/Burst Alert Telescope (BAT) all-sky ultrahard X-ray (14-195 keV) survey. Out of 606 non-blazar AGN in the Swift/BAT70-month catalog at high galactic latitude of $|b|>10^{\circ}$, we obtain IRphotometric data of 604 objects by cross-matching the AGN positions withcatalogs from the WISE, AKARI, IRAS, and Herschel infrared observatories. Wefind a good correlation between the ultra-hard X-ray and mid-IR (MIR)luminosities over five orders of magnitude ($41 < \log (L_{14-195}/{\rmerg}~{\rm s}^{-1})< 46$). Informed by previous measures of the intrinsicspectral energy distribution of AGN, we find FIR pure-AGN candidates whose FIRemission is thought to be AGN-dominated with low starformation activity. Wedemonstrate that the dust covering factor decreases with the bolometric AGNluminosity, confirming the luminosity-dependent unified scheme. We also showthat the completeness of the WISE color-color cut in selecting Swift/BAT AGNincreases strongly with 14-195 keV luminosity.

The Complete Infrared View of Active Galactic Nuclei from the 70-month Swift/BAT Catalog