Astrophys. J., Suppl. Ser., 228, 2-2 (2017/January-0)
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., COMASTRI A., GILLI R., GU Q.-S., HORNSCHEMEIER A.E., KOEKEMOER A., LIU T., MAINIERI V., PAOLILLO M., RANALLI P., ROSATI P., SCHNEIDER D.P., SHEMMER O., SMAIL I., SUN M., TOZZI P., VIGNALI C. and WANG J.-X.
Abstract (from CDS):
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 x 10–17, 6.4 x 10–18, and 2.7 x 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).
© 2016. The American Astronomical Society. All rights reserved.
catalogs - cosmology: observations - diffuse radiation - galaxies: active - surveys - X-rays: galaxies - X-rays: galaxies
VizieR on-line data:
<Available at CDS (J/ApJS/228/2): table1.dat table4.dat table5.dat>
Table 4: [LBX2017] NNNN (Nos 1-1008). Table 5: [LBX2017] SNN (Nos 1-47).
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