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

Luo, B.B.LuoBrandt, W. N.W. N.BrandtXue, Y. Q.Y. Q.XueLehmer, B.B.LehmerAlexander, D. M.D. M.AlexanderBauer, F. E.F. E.BauerVito, F.F.VitoYang, G.G.YangBasu-Zych, A. R.A. R.Basu-ZychCOMASTRI, AndreaAndreaCOMASTRIGILLI, RobertoRobertoGILLIGu, Q. -S.Q. -S.GuHornschemeier, A. E.A. E.HornschemeierKoekemoer, A.A.KoekemoerLiu, T.T.LiuMainieri, V.V.MainieriPaolillo, MaurizioMaurizioPaolilloRanalli, P.P.RanalliRosati, P.P.RosatiSchneider, D. P.D. P.SchneiderShemmer, O.O.ShemmerSmail, I.I.SmailSun, M.M.SunTOZZI, PaoloPaoloTOZZIVignali, C.C.VignaliWang, J. -X.J. -X.Wang2020-08-262020-08-2620170067-0049http://hdl.handle.net/20.500.12386/26837We 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 ({K}s≤slant 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).STAMPAenThe Chandra Deep Field-South Survey: 7 Ms Source CatalogsArticle10.3847/1538-4365/228/1/22-s2.0-85011573786000397309900002https://iopscience.iop.org/article/10.3847/1538-4365/228/1/2/2017ApJS..228....2LFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation