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Peculiar morphology of the high-redshift radio galaxies 3C 13 and 3C 256 in subarcsecond seeing
Le Fevre, O.; Hammer, F.; Nottale, L.; Mazure, A.; Christian, C.
AA(Canada-France-Hawaii Telescope Corp., Kamuela, HI; Meudon, Observatoire, France), AB(Meudon, Observatoire, France), AC(Meudon, Observatoire, France), AD(Meudon, Observatoire, France), AE(Canada-France-Hawaii Telescope Corp., Kamuela, HI; Hawaii, University, Honolulu)
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 324, Jan. 1, 1988, p. L1-L3. (ApJL Homepage)
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NASA/STI Keywords:
Astronomical Photometry, Galactic Structure, Gravitational Lenses, Radio Galaxies, Red Shift, Galactic Clusters, High Resolution, Luminosity, Spatial Resolution
Bibliographic Code:


High-spatial-resolution imaging is presented for two radio galaxies from the 3C catalog, 3C 13 and 3C 256 with redshifts of 1.351 and 1.819, respectively. The excellent image quality obtained at CFHT, 0.6-arcsec FWHM for 3C 13 and 0.7-arcsec FWHM for 3C 256 in the R band, over long integration times, made it possible to resolve these distant galaxies into complex structures. As suggested by Le Fevre et al. (1987) for another source (the gravitational lens candidate 3C 324) an interpretation in terms of gravitational amplification by foreground galaxies or clusters of galaxies is proposed. 3C 13 appears to be the most serious candidate, since a foreground galaxy, with an absolute luminosity M(R) = 23.3 and a redshift z = 0.477, is only 3.9 in from the extended radio galaxy.

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