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J/AJ/122/2810 Chandra Deep Field North Survey. V. (Brandt+, 2001)
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Beginning of ReadMe :J/AJ/122/2810 Chandra Deep Field North Survey. V. (Brandt+, 2001)
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The Chandra Deep Field North survey. V. 1 Ms source catalogs.
Brandt W.N., Alexander D.M., Hornschemeier A.E., Garmire G.P.,
Schneider D.P., Barger A.J., Bauer F.E., Broos P.S., Cowie L.L.,
Townsley L.K., Burrows D.N., Chartas G., Feigelson E.D., Griffiths R.E.,
Nousek J.A., Sargent W.L.W.
<Astron. J. 122, 2810 (2001)>
=2001AJ....122.2810B
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ADC_Keywords: Surveys ; X-ray sources
Mission_Name: Chandra
Keywords: catalogs - cosmology: observations - galaxies: active -
galaxies: general - galaxies: nuclei - surveys - X-rays
Abstract:
An extremely deep X-ray survey ( 1Ms) of the Hubble Deep Field North
(HDF-N) and its environs ( 450arcmin^2^) has been performed with the
Advanced CCD Imaging Spectrometer (ACIS) 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
and 2-8keV flux limits of 3x10^-17^ and 2x10^-16^ergs/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
0.5-8.0keV band, 325 in the 0.5-2.0keV band, 265 in the 2-8keV band,
and 145 in the 4-8keV band. Two new Chandra sources in the HDF-N
itself are reported and discussed. Source positions are accurate to
within 0.6"-1.7" (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
4.2x10^-17^ergs/cm^2^/s) and 4200^+670^_580_deg^-2^ (at
3.8x10^-16^ergs/cm^2^/s) are observed in the soft and hard bands,
respectively.