The Chandra Deep Field North Survey. V. 1 M[CLC]s[/CLC] Source Catalogs

Abstract

An extremely deep X-ray survey (about 1 Ms) of the Hubble Deep Field North\nand its environs (about 450 arcmin^2) has been performed with the Advanced CCD\nImaging Spectrometer on board the Chandra X-ray Observatory. This is one of the\ntwo deepest X-ray surveys ever performed; for point sources near the aim point\nit reaches 0.5-2.0 keV and 2-8 keV flux limits of 3 x 10^{-17} erg/cm^2/s and 2\nx 10^{-16} erg/cm^2/s, respectively. Here we provide source catalogs along with\ndetails of the observations, data reduction, and technical analysis. Observing\nconditions, such as background, were excellent for almost all of the exposure.\nWe have detected 370 distinct point sources: 360 in the 0.5-8.0 keV band, 325\nin the 0.5-2.0 keV band, 265 in the 2-8 keV band, and 145 in the 4-8 keV band.\nTwo new Chandra sources in the HDF-N itself are reported and discussed. Source\npositions are accurate to within 0.6-1.7 arcsec (at 90% confidence) depending\nmainly on the off-axis angle. We also detect two highly significant extended\nX-ray sources and several other likely extended X-ray sources. We present basic\nnumber count results for sources located near the center of the field. Source\ndensities of 7100^{+1100}_{-940} deg^{-2} (at 4.2 x 10^{-17} erg/cm^2/s) and\n4200^{+670}_{-580} deg^{-2} (at 3.8 x 10^{-16} erg/cm^2/s) are observed in the\nsoft and hard bands, respectively.\n