We present X-ray source catalogs for the approximate to 7 Ms exposure of the Chandra Deep Field-South (CDF-S), which covers a total area of 484.2. arcmin(2). 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-s <= 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 approximate to 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 approximate to 1 arcmin(2) region of approximate to 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 approximate to 50,500 deg(-2), and 47% +/- 4% of these sources are AGNs (approximate to 23,900 deg(-2)).
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, Maurizio; Ranalli, P.; Rosati, P.; Schneider, D. P.; Shemmer, O.; Smail, I.; Sun, M.; Tozzi, P.; Vignali, C.; Wang, J. X.. - In: ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES. - ISSN 0067-0049. - 228:1(2017), pp. 2-31. [10.3847/1538-4365/228/1/2]
THE CHANDRA DEEP FIELD-SOUTH SURVEY: 7 MS SOURCE CATALOGS
PAOLILLO, MAURIZIO;
2017
Abstract
We present X-ray source catalogs for the approximate to 7 Ms exposure of the Chandra Deep Field-South (CDF-S), which covers a total area of 484.2. arcmin(2). 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-s <= 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 approximate to 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 approximate to 1 arcmin(2) region of approximate to 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 approximate to 50,500 deg(-2), and 47% +/- 4% of these sources are AGNs (approximate to 23,900 deg(-2)).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
