==========================================================================
IX/62 Catalog of CSC2.0-SDSS DR15 crossmatched sources (Rots+, 2021)
The following files can be converted to FITS (extension .fit or fit.gz)
catalog.dat
==========================================================================
Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=IX/62
==========================================================================
drwxr-xr-x 65 cats archive 4096 Sep 3 2023 [Up]
drwxr-xr-x 3 cats archive 278 Jan 12 2023 [TAR file]
-rw-r--r-- 1 cats archive 461 Dec 19 2022 .message
-r--r--r-- 1 cats archive 8104 Jan 25 2021 ReadMe
-rw-r--r-- 1 cats archive 1673 Jan 25 2021 +footg5.gif
-rw-r--r-- 1 cats archive 14409 Jan 25 2021 +footg8.gif
-r--r--r-- 1 cats archive 3583946 Jan 22 2021 catalog.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe :IX/62 Catalog of CSC2.0-SDSS DR15 crossmatched sources (Rots+, 2021)
================================================================================
The catalog of Chandra Source Catalog 2.0 (CSC2.0) sources with Sloan Digital
Sky Survey (SDSS) Data Release 15 and 16 counterparts.
Rots A., Kim D.-W., CSC team
<Chandra X-ray observatory (2021)>
=2021yCat.9062....0R
================================================================================
ADC_Keywords: X-ray sources ; Surveys ; Optical ; Cross identifications
Keywords: catalogs ; X-rays: general
Description:
We present a catalog of Chandra Source Catalog 2.0 sources
cross-matched with SDSS DR15/16 counterparts. The crossmatch is
performed with a Bayesian method developed by Budavari & Szalay
(2008ApJ...679..301B) as implemented and extended by A. Rots (2020,
https://cxc.cfa.harvard.edu/cda/files/XmatchQuickSummary.pdf)
that takes into account local source density as well as both error
ellipses and raw-size ellipses of the sources (for more details, see
https://cxc.cfa.harvard.edu/cda/files/XmatchQuickSummary.pdf). CSC2.0
sources are extracted from the CSC2.0 "Master Source" table
(https://cxc.harvard.edu/csc/columns/master_alpha.html), while SDSS
DR15 are from the "Star" or "Galaxy" views. For each crossmatched
source pair the match probability, match type and match grade are
provided. In addition, ambiguous matches are explicitly called out and
provided in separate published tables.
The lists of ambiguous matches can be found in the following files:
https://cxc.cfa.harvard.edu/cda/files/CSC2-SDSSDR15SG_AmbiguousXmatch.txthttps://cxc.cfa.harvard.edu/cda/files/SDSSDR15SG-CSC2_AmbiguousXmatch.txt
and a simple readme file is located at:
https://cxc.cfa.harvard.edu/cda/files/AmbiguousXmatch.readme