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The Chandra Deep Field-South Survey : 7 Ms Source Catalogs

Luo, B.; Brandt, W.~N.; Xue, Y.~Q.; Lehmer, B.; Alexander, D. M.; Bauer, F. E.; Vito, F.; Yang, G.; Basu-Zych, A. R. and Comastri, A., et al. (2017) In Astrophysical Journal, Supplement Series 228(1).
Abstract

We present X-ray source catalogs for the ≈7 Ms exposure of the Chandra Deep Field-South (CDF-S), which covers a total area of 484.2 arcmin2. Utilizing wavdetect for initial source detection and ACIS Extract for photometric extraction and significance assessment, we create a main source catalog containing 1008 sources that are detected in up to three X-ray bands: 0.5-7.0 keV, 0.5-2.0 keV, and 2-7 keV. A supplementary source catalog is also provided, including 47 lower-significance sources that have bright (Ks ≤ 23) near-infrared counterparts. We identify multiwavelength counterparts for 992 (98.4%) of the main-catalog sources, and we collect redshifts for 986 of these sources, including 653 spectroscopic redshifts... (More)

We present X-ray source catalogs for the ≈7 Ms exposure of the Chandra Deep Field-South (CDF-S), which covers a total area of 484.2 arcmin2. Utilizing wavdetect for initial source detection and ACIS Extract for photometric extraction and significance assessment, we create a main source catalog containing 1008 sources that are detected in up to three X-ray bands: 0.5-7.0 keV, 0.5-2.0 keV, and 2-7 keV. A supplementary source catalog is also provided, including 47 lower-significance sources that have bright (Ks ≤ 23) near-infrared counterparts. We identify multiwavelength counterparts for 992 (98.4%) of the main-catalog sources, and we collect redshifts for 986 of these sources, including 653 spectroscopic redshifts and 333 photometric redshifts. Based on the X-ray and multiwavelength properties, we identify 711 active galactic nuclei (AGNs) from the main-catalog sources. Compared to the previous ≈4 Ms CDF-S catalogs, 291 of the main-catalog sources are new detections. We have achieved unprecedented X-ray sensitivity with average flux limits over the central ≈1 arcmin2 region of ≈1.9 ×10-17, 6.4 ×10-18, and 2.7 ×10-17 erg cm-2 s-1 in the three X-ray bands, respectively. We provide cumulative number-count measurements observing, for the first time, that normal galaxies start to dominate the X-ray source population at the faintest 0.5-2.0 keV flux levels. The highest X-ray source density reaches ≈50,500 deg-2, and 47% ± 4% of these sources are AGNs (≈23,900 deg-2).

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subject
keywords
catalogs, cosmology: observations, diffuse radiation, galaxies: active, surveys, X-rays: galaxies Supporting material: extended figures, machine-readable tables
in
Astrophysical Journal, Supplement Series
volume
228
issue
1
publisher
University of Chicago Press
external identifiers
  • scopus:85011573786
  • wos:000397309900002
ISSN
0067-0049
DOI
10.3847/1538-4365/228/1/2
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English
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yes
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fc9c7570-f617-4318-acdc-35a68c1ce4e7
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2017-02-16 08:23:33
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2018-01-07 11:50:05
@article{fc9c7570-f617-4318-acdc-35a68c1ce4e7,
  abstract     = {<p>We present X-ray source catalogs for the ≈7 Ms exposure of the Chandra Deep Field-South (CDF-S), which covers a total area of 484.2 arcmin<sup>2</sup>. Utilizing wavdetect for initial source detection and ACIS Extract for photometric extraction and significance assessment, we create a main source catalog containing 1008 sources that are detected in up to three X-ray bands: 0.5-7.0 keV, 0.5-2.0 keV, and 2-7 keV. A supplementary source catalog is also provided, including 47 lower-significance sources that have bright (K<sub>s</sub> ≤ 23) near-infrared counterparts. We identify multiwavelength counterparts for 992 (98.4%) of the main-catalog sources, and we collect redshifts for 986 of these sources, including 653 spectroscopic redshifts and 333 photometric redshifts. Based on the X-ray and multiwavelength properties, we identify 711 active galactic nuclei (AGNs) from the main-catalog sources. Compared to the previous ≈4 Ms CDF-S catalogs, 291 of the main-catalog sources are new detections. We have achieved unprecedented X-ray sensitivity with average flux limits over the central ≈1 arcmin<sup>2</sup> region of ≈1.9 ×10<sup>-17</sup>, 6.4 ×10<sup>-18</sup>, and 2.7 ×10<sup>-17</sup> erg cm<sup>-2</sup> s<sup>-1</sup> in the three X-ray bands, respectively. We provide cumulative number-count measurements observing, for the first time, that normal galaxies start to dominate the X-ray source population at the faintest 0.5-2.0 keV flux levels. The highest X-ray source density reaches ≈50,500 deg<sup>-2</sup>, and 47% ± 4% of these sources are AGNs (≈23,900 deg<sup>-2</sup>).</p>},
  articleno    = {2},
  author       = {Luo, B. and Brandt, W.~N. and Xue, Y.~Q. and Lehmer, B. and Alexander, D. M. and Bauer, F. E. and Vito, F. and Yang, G. and Basu-Zych, A. R. and Comastri, A. and Gilli, R. and Gu, Q. S. and Hornschemeier, A. E. and Koekemoer, A. and Liu, T. and Mainieri, Vincenzo and Paolillo, M. and Ranalli, P. and Rosati, Piero and Schneider, D. P. and Shemmer, O. and Smail, I. and Sun, M. and Tozzi, P. and Centis Vignali, M and Wang, J. X.},
  issn         = {0067-0049},
  keyword      = {catalogs,cosmology: observations,diffuse radiation,galaxies: active,surveys,X-rays: galaxies Supporting material: extended figures, machine-readable tables},
  language     = {eng},
  month        = {01},
  number       = {1},
  publisher    = {University of Chicago Press},
  series       = {Astrophysical Journal, Supplement Series},
  title        = {The Chandra Deep Field-South Survey : 7 Ms Source Catalogs},
  url          = {http://dx.doi.org/10.3847/1538-4365/228/1/2},
  volume       = {228},
  year         = {2017},
}