Mid-infrared properties and color-selection for X-ray detected AGN
Carolin Cardamone (Yale University) , Maaike Damen (Leiden), Marijn Franx (Leiden), Eric Gawiser (Rutgers), Ivo Labbe (Carnegie), Ezequiel Treister (ESO) , C. Megan Urry (Yale) , P. van Dokkum (Yale), and Shanil N. Virani (Yale)
We present the mid-infrared colors of X-ray-detected AGN and explore mid-infrared selection criteria. Using a statistical matching technique, the likelihood ratio, 921 IRAC counterparts were identified with the 1017 published X-ray sources in the Chandra Deep Field South and Extended Chandra Deep Field South. Although most X-ray selected sources have mid-infrared spectral shapes consistent with power-law slopes,
, they display a wide range of colors in the four observed infrared wavelengths (
making color selection challenging without longer wavelength coverage.