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  • | name = [[Third Cambridge Catalogue of Radio Sources|3C]] 48 | work=Results for 3C 48
    4 KB (475 words) - 12:28, 5 February 2018
  • | name = [[Third Cambridge Catalogue of Radio Sources|3C]] 273 | image = Best image of bright quasar 3C 273.jpg
    11 KB (1,478 words) - 12:28, 5 February 2018
  • ...p later used the atlas as evidence in his debate on [[Quasar|quasi-stellar objects]] (QSOs). ...in the atlas are referred to primarily by their Arp number. Many of these objects (particularly [[Arp 220]]) are also used as spectral templates for studying
    19 KB (2,646 words) - 14:44, 2 August 2020
  • ...r3=J. Mack |author4=F. de Mendonca |title=Detection of X-Ray Emission from 3C 273 and NGC 5128 [[Category:NGC objects]]
    29 KB (4,015 words) - 12:30, 5 February 2018