IX/57        The Chandra Source Catalog (CSC), Release 2.0        (Evans+, 2019)
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drwxr-xr-x 58 cats archive 4096 Jan 25 2021 [Up] drwxr-xr-x 4 cats archive 4096 May 26 16:19 [TAR file] -rw-r--r-- 1 cats archive 462 Nov 26 2019 .message -r--r--r-- 1 cats archive 111392 Nov 19 2019 ReadMe -rw-r--r-- 1 cats archive 2404 Nov 26 2019 +footg5.gif -rw-r--r-- 1 cats archive 30288 Nov 26 2019 +footg8.gif -r--r--r-- 1 cats archive 453903360 Nov 19 2019 csc2master.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : IX/57 The Chandra Source Catalog (CSC), Release 2.0 (Evans+, 2019) ================================================================================ Evans I.N., Primini F.A., Glotfelty C.S., Anderson C.S., Bonaventura N.R., Chen J.C., Davis J.E., Doe S.M., Evans J.D., Fabbiano G., Galle E.C., Gibbs D.G., Grier J.D., Hain R.M., Hall D.M., Harbo P.N., He X., Houck J.C., Karovska M., Kashyap V.L., Lauer J., McCollough M.L., McDowell J.C., Miller J.B., Mitschang A.W., Morgan D.L., Mossman A.E., Nichols J.S., Nowak M.A., Plummer D.A., Refsdal B.L., Rots A.H., Siemiginowska A., Sundheim B.A., Tibbetts M.S., Van Stone D.W., Winkelman S.L., Zografou P. <Astrophys. J. Suppl. Ser. 189, 37 (2010)> =2010ApJS..189...37E =2019yCat.9057....0E ================================================================================ ADC_Keywords: X-ray sources ; Surveys Mission_Name: Chandra Keywords: catalogs; X-rays: general Description: The Chandra Source Catalog (CSC) is the definitive catalog of X-ray sources detected by the Chandra X-ray Observatory. By combining Chandra's sub-arcsecond on-axis spatial resolution and low instrumental background with consistent data processing, the CSC delivers a wide variety of uniformly calibrated properties and science ready data products for detected sources over four decades of flux. The second major release of the catalog, CSC 2.0, includes measured properties for 317,167 unique compact and extended X-ray sources in the sky, allowing statistical analysis of large samples, as well as individual source studies. The sensitivity limit for compact sources in CSC 2.0 is  5 net counts (a factor of > 2 better than the previous catalog release). This improvement is achieved by using a two-stage approach that involves co-adding multiple observations of the same field prior to source detection, and then using an optimized source detection method. Acknowledging the Chandra Source Catalog in publications: Users are kindly requested to acknowledge their use of the Chandra Source Catalog in any resulting publications. The following language is suggested: "This research has made use of data obtained from the Chandra Source Catalog, provided by the Chandra X-ray Center (CXC) as part of the Chandra Data Archive."

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