The Chandra Deep Field-South Survey: 4 Ms Source Catalogs
Y.Q. Xue, B. Luo, W.N. Brandt, F.E. Bauer, B.D. Lehmer, P.S. Broos,, D.P. Schneider, D.M. Alexander, M. Brusa, A. Comastri, A.C. Fabian, R. Gilli,, G. Hasinger, A.E. Hornschemeier, A. Koekemoer, T. Liu, V. Mainieri, M., Paolillo, D.A. Rafferty, P. Rosati, O. Shemmer

TL;DR
This paper presents the deepest X-ray point-source catalog to date from the 4Ms Chandra Deep Field-South survey, including new sources, multiwavelength identifications, and analysis of source properties, revealing the prevalence of AGNs and starburst galaxies at faint flux levels.
Contribution
The paper provides the first 4Ms Chandra source catalog with 740 X-ray sources, including 300 new detections, and offers detailed multiwavelength data and analysis of source populations.
Findings
Over 75% of sources are AGNs.
About 35% of new sources are normal/starburst galaxies.
Source densities reach ~9800 AGNs per square degree.
Abstract
[abridged] We present point-source catalogs for the 4Ms Chandra Deep Field-South (CDF-S), which is the deepest Chandra survey to date and covers an area of 464.5 arcmin^2. We provide a main source catalog, which contains 740 X-ray point sources that are detected with wavdetect at a false-positive probability threshold of 1E-5 and also satisfy a binomial-probability source-selection criterion of P<0.004; this approach is designed to maximize the number of reliable sources detected. A total of 300 main-catalog sources are new compared to the previous 2Ms CDF-S main-catalog sources. We also provide a supplementary catalog, which consists of 36 sources that are detected with wavdetect at 1E-5, satisfy 0.004< P<0.1, and have an optical counterpart with R<24. Multiwavelength identifications, basic optical/infrared/radio photometry, and spectroscopic/photometric redshifts are provided for the…
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