Here we present the results of deep Chandra imaging of the central region of the Extended Groth Strip, the AEGIS-X Deep (AEGIS-XD) survey. When combined with previous Chandra observations of a wider area of the strip, AEGIS-X Wide (AEGIS-XW; Laird et~al. 2009), these provide data to a nominal exposure depth of 800ks in the three central ACIS-I fields, a region of approximately 0.29 deg2.

This is currently the third deepest X-ray survey in existence, a factor 2-3 shallower than the Chandra Deep Fields (CDFs) but over an area 3 times greater than each CDF. We present a catalogue of 937 point sources detected in the deep chandra observations. We present identifications of our X-ray sources from deep ground-based, Spitzer, GALEX and HST imaging. Using a likelihood ratio analysis, we associate multi band counterparts for 929/937 of our X-ray sources, with an estimated 95% reliability, making the identification completeness approximately 94% in a statistical sense.

Reliable spectroscopic redshifts for 354 of our X-ray sources are provided predominantly from Keck (DEEP2/3) and MMT Hectospec, so the current spectroscopic completeness is about 38%. For the remainder of the X-ray sources, we compute photometric redshifts based on multi-band photometry in up to 35 bands from the UV to mid-IR. Particular attention is given to the fact that the vast majority the X-ray sources are AGN and require hybrid templates. Our photometric redshifts have typical accuracy of σ=0.05 and an outlier fraction of approximately 5%. The X-ray, multi-wavelength photometry and redshift catalogues presented in Nandra et al. 2015, are made publicly available through these pages. In particular we provide:

Layout of the AEGIS field with indicated the location of the Chandra X-ray imaging. The 200ks AEGIS-XW area (Laird et al. 2009) is shown as the greyscale image.caption text