The Chandra Deep Field North Survey. V. 1 Ms Source Catalogs
Abstract
An extremely deep X-ray survey (about 1 Ms) of the Hubble Deep Field North and its environs (about 450 arcmin^2) has been performed with the Advanced CCD Imaging Spectrometer on board the Chandra X-ray Observatory. This is one of the two deepest X-ray surveys ever performed; for point sources near the aim point it reaches 0.5-2.0 keV and 2-8 keV flux limits of 3 x 10^{-17} erg/cm^2/s and 2 x 10^{-16} erg/cm^2/s, respectively. Here we provide source catalogs along with details of the observations, data reduction, and technical analysis. Observing conditions, such as background, were excellent for almost all of the exposure. We have detected 370 distinct point sources: 360 in the 0.5-8.0 keV band, 325 in the 0.5-2.0 keV band, 265 in the 2-8 keV band, and 145 in the 4-8 keV band. Two new Chandra sources in the HDF-N itself are reported and discussed. Source positions are accurate to within 0.6-1.7 arcsec (at 90% confidence) depending mainly on the off-axis angle. We also detect two highly significant extended X-ray sources and several other likely extended X-ray sources. We present basic number count results for sources located near the center of the field. Source densities of 7100^{+1100}_{-940} deg^{-2} (at 4.2 x 10^{-17} erg/cm^2/s) and 4200^{+670}_{-580} deg^{-2} (at 3.8 x 10^{-16} erg/cm^2/s) are observed in the soft and hard bands, respectively.
Cite
@article{arxiv.astro-ph/0108404,
title = {The Chandra Deep Field North Survey. V. 1 Ms Source Catalogs},
author = {W. N. Brandt and D. M. Alexander and A. E. Hornschemeier and G. P. Garmire and D. P. Schneider and A. J. Barger and F. E. Bauer and P. S. Broos and L. L. Cowie and L. K. Townsley and D. N. Burrows and G. Chartas and E. D. Feigelson and R. E. Griffiths and J. A. Nousek and W. L. W. Sargent},
journal= {arXiv preprint arXiv:astro-ph/0108404},
year = {2010}
}
Comments
41 pages, AJ, in press; tables 3 and 6, images, and version with full-resolution figures at http://www.astro.psu.edu/users/niel/hdf/hdf-chandra.html