NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The Chandra Deep Field-South Survey: 7 Ms Source CatalogsWe present X-ray source catalogs for the approx. 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 < or = 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 approx. 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 approx. 1 arcmin2 region of 1.9 x 10(exp -17), 6.4 x 10(exp -18), and 2.7 x 10(exp -17) erg/sq cm/s 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 approx. 50,500/sq deg, and 47% +/- 4 of these sources are AGNs (approx. 23,900/sq deg).
Document ID
20170009896
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Luo, B.
(Pennsylvania State Univ. University Park, PA, United States)
Brandt, W. N.
(Pennsylvania State Univ. University Park, PA, United States)
Xue, Y. Q.
(China Scientific and Technical Univ. Hofei, China)
Lehmer, B.
(Arkansas Univ. Fayetteville, AR, United States)
Alexander, D. M.
(Durham Univ. United Kingdom)
Bauer, F. E.
(Space Science Inst. Boulder, CO, United States)
Vito, F.
(Pennsylvania State Univ. University Park, PA, United States)
Yang, G.
(Pennsylvania State Univ. University Park, PA, United States)
Basu-Zych, A. R.
(Maryland Univ. Baltimore County Baltimore, MD, United States)
Comastri, A.
(Istituto Nazionale di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Bologna, Italy)
Gilli, R.
(Istituto Nazionale di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Bologna, Italy)
Gu, Q.-S.
(Nanjing Univ. China)
Hornschemeier, A. E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Koekemoer, A.
(Space Telescope Science Inst. Baltimore, MD, United States)
Liu, T.
(China Scientific and Technical Univ. Hofei, China)
Mainieri, V.
(European Southern Observatory Munich, Germany)
Paolillo, M.
(Institute of Nuclear Physics (INFN) Frascati, Italy)
Ranalli, P.
(Lund Univ. Sweden)
Rosati, P.
(Ferrara Univ. Italy)
Schneider, D. P.
(Pennsylvania State Univ. University Park, PA, United States)
Shemmer, O.
(University of North Texas Denton, TX, United States)
Smail, I.
(Durham Univ. United Kingdom)
Sun, M.
(China Scientific and Technical Univ. Hofei, China)
Tozzi, P.
(Istituto Nazionale di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Bologna, Italy)
Vignali, C.
(Bologna Univ. Italy)
Wang, J.-X.
(China Scientific and Technical Univ. Hofei, China)
Date Acquired
October 11, 2017
Publication Date
December 27, 2016
Publication Information
Publication: The Astrophysical Journal Supplement Series
Publisher: The American Astronomical Society
Volume: 228
Issue: 1
ISSN: 0067-0049
e-ISSN: 1538-4365
Subject Category
Astrophysics
Report/Patent Number
GSFC-E-DAA-TN46803
Distribution Limits
Public
Copyright
Other
Keywords
cosmology: observations – diffuse radiation – galaxies: active – surveys â

Available Downloads

There are no available downloads for this record.
No Preview Available