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The application of multi-wavelength selection techniques is crucial fordiscovering a complete and unbiased set of Active Galactic Nuclei (AGNs). Here,we select a sample of 72 AGN candidates in the Extended Groth Strip (EGS) usingdeep radio and mid-infrared data from the Very Large Array (VLA) and theSpitzer Space Telescope, and analyze their properties across other wavelengths.Only 30% of these sources are detected in deep 200 ks Chandra X-ray Observatorypointings. The X-ray detected sources demonstrate moderate obscuration withcolumn densities of N_H > 10^22 cm^-2. A stacked image of sources undetected byChandra shows low levels of X-ray activity, suggesting they may be faint orobscured AGNs. Less than 40% of our sample are selected as AGNs with opticalbroad lines, mid-infrared power laws, or X-ray detections. Thus, if ourcandidates are indeed AGNs, the radio/mid-infrared selection criteria we useprovide a powerful tool for identifying sources missed by other surveys.

AEGIS: Radio and Mid-Infrared Selection of Obscured AGN Candidates