Peculiar Morphology of the High-Redshift Radio Galaxies 3C 13 and 3C 256 in Subarcsecond Seeing
Abstract
We report high spatial resolution imaging of 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" FWHM for 3C 13 and 0.7" for 3C 256 in the R band, over long integration times, allowed us to resolve these distant galaxies into complex structures. As suggested by Le Fevre and colleagues in 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" from the extended radio galaxy.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- January 1988
- DOI:
- 10.1086/185078
- Bibcode:
- 1988ApJ...324L...1L
- Keywords:
-
- Astronomical Photometry;
- Galactic Structure;
- Gravitational Lenses;
- Radio Galaxies;
- Red Shift;
- Galactic Clusters;
- High Resolution;
- Luminosity;
- Spatial Resolution;
- Astronomy;
- RADIO SOURCES: GALAXIES;
- GALAXIES: PHOTOMETRY;
- GRAVITATIONAL LENSES