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IX/58 2SXPS Swift X-ray telescope point source catalogue (Evans+, 2020)
The following files can be converted to FITS (extension .fit or fit.gz)
2sxps.dat 2sxpscle.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=IX/58
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-rw-r--r-- 1 cats archive 65517 Apr 2 2020 +footg8.gif Beginning of ReadMe :IX/58 2SXPS Swift X-ray telescope point source catalogue (Evans+, 2020)
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2SXPS: An improved and expanded Swift X-ray telescope point source catalog.
Evans P.A., Page K.L., Osborne J.P., Beardmore A.P., Willingale R.,
Burrows D.N., Kennea J.A., Perri M., Capalbi M., Tagliaferri G., Cenko S.B.
<Astrophys. J., Suppl. Ser., 247, 54 (2020)>
=2020yCat.9058....0E
=2020ApJS..247...54E
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ADC_Keywords: X-ray sources ; Surveys
Mission_Name: Swift
Keywords: catalogs - surveys - X-rays: observations - methods: data analysis
Abstract:
We present the 2SXPS (Swift-XRT Point Source) catalog, containing
206,335 point sources detected by the Swift X-ray Telescope (XRT) in
the 0.3-10 keV energy range. This catalog represents a significant
improvement over 1SXPS, with double the sky coverage (now
3,790deg^2^), and several significant improvements in source detection
and classification. In particular, we present for the first time
techniques to model the effect of stray light - significantly reducing
the number of spurious sources detected. These techniques will be very
important for future, large effective area X-ray mission such as the
forthcoming Athena X-ray observatory. We also present a new model of
the XRT point spread function, and a method for correctly localising
and characterising piled up sources. We provide light curves - in four
energy bands, two hardness ratios and two binning timescales -- for
every source, and from these deduce that over 80,000 of the sources in
2SXPS are variable in at least one band or hardness ratio. The catalog
data can be queried or downloaded via a bespoke web interface at
https://www.swift.ac.uk/2SXPS, via HEASARC, or in Vizier (IX/58)
Description:
The 2SXPS catalogue is a point-source catalogue built from all
Swift-XRT Photon Counting mode data of at least 50 s in duration
gathered prior between 2005 Jan 01 and 2018 August 01. It contains
positions, fluxes, spectral details, variability information and a
flag indicating the reliability of the detection for 206,335 objects.
Various values (e.g. the count rates) are given in 4 bands:
Total = 0.3-10 keV
Soft = 0.3-1 keV
Medium = 1-2 keV
Hard = 2-10 keV
The source detection was performed in each of these bands
independently, and the results combined to give this final catalogue.