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USS Sources

(A sample of 669 ultra steep spectrum radio sources to find high redshift radio galaxies)
(catalog of sources with steep spectral index)

I use the term USS Sources for the list of Radio Sources in _A sample of 669 ultra steep spectrum Radio sources to find high redshift radio galaxies_, a list with Spectral Indexes < -1.3, suggesting a high Redshift. The Catalog is collected from the Surveys, the Texas Survey of Radio Sources at 365 MHz, the NRAO VLA Sky Survey, the Parkes-MIT-NRAO Surveys, WENSS (the Westerbork Northern Sky Survey, by the Westerbork Synthesis Radio Telescope (WSRT)), MRC (the Molonglo Reference Catalog), and FIRST (the Faint Images of Radio Sky at Twenty centimeters).


(catalog,radio)
https://openaccess.leidenuniv.nl/handle/1887/6927
PrefixExampleSurvey/Catalog 
MPMP J0000-3556USS Sourcesdata from MRC and PMN
TNTN J0924-2201USS Sourcesdata from TXS and NVSS
WNWN J0000+4654USS Sourcesdata from WENSS and NVSS

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