NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-19 T09:27:35 PDT
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Reference(s) for object 4C +56.22

18 reference(s) found in NED.


1. 2015ApJS..219...39R Richards, Gordo... Bayesian High-redshift Quasar Classification from Optical and Mid-IR Photometry
2. 2014MNRAS.442.3329X Xu, J.; Han, J.... Redshift evolution of extragalactic rotation measures
3. 2014ApJS..212...15F Farnes, J. S.; ... A Broadband Polarization Catalog of Extragalactic Radio Sources
4. 2009MNRAS.396..223D D'Abrusco, R.; ... Quasar candidates selection in the Virtual Observatory era
5. 2009ApJS..180...67R Richards, Gordo... Efficient Photometric Selection of Quasars from the Sloan Digital Sky Survey. II...
6. 2009ApJ...702.1230T Taylor, A. R.; ... A Rotation Measure Image of the Sky
7. 2007AJ....134.1245C Cohen, A. S.; L... The VLA Low-Frequency Sky Survey
8. 2004ApJS..155..257R Richards, Gordo... Efficient Photometric Selection of Quasars from the Sloan Digital Sky Survey: 10...
9. 2001PASP..113..362C Condon, J., Yin... Offset Pointing Calibrators for Large Radio Telescopes
10. 2000IAUC.7432B...1V Voges, W., Asch... ROSAT ALL-SKY Survey Faint Source Catalogue
11. 1996AJ....111.1945D DOUGLAS, J. N.,... THE TEXAS SURVEY OF RADIO SOURCES COVERING -35.5^deg^ <{delta} < 71.5^deg^ AT 36...
12. 1992ApJS...79..331W WHITE, R. L., A... A NEW CATALOG OF 30,239 1.4 GHz SOURCES
13. 1991ApJS...75.1011G GREGORY, P. C.,... THE 87GB CATALOG OF RADIO SOURCES COVERING 0^deg^ < {delta} < +75^deg^ AT 4.85 G...
14. 1991ApJS...75....1B BECKER, R. L., ... A NEW CATALOG OF 53,522 4.85 GHz SOURCES
15. 1990MNRAS.246..256H Hales, S. E. G.... The 6C survey of radio sources - III. The zone 48^deg^ < {delta} < 68^deg^, 05^h...
16. 1975AJ.....80..931V Viner, M., Eric... 26.3-MHz radio source survey. II - Radio source positions and fluxes
17. 1969MNRAS.145..181C Caswell, J., Cr... A pencil-beam survey of radio sources at 178 MHz
18. 1967MmRAS..71...49G Gower, J. F. R.... A Survey of Radio Sources in the Declination Ranges -07^deg^ to 20^deg^ and 40^d...

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