High spatial resolution imaging of some of the distant 3CR galaxies
1988; IOP Publishing; Volume: 331; Linguagem: Inglês
10.1086/185238
ISSN1538-4357
AutoresJ. Perea, F. Hammer, JB Jones,
Tópico(s)Stellar, planetary, and galactic studies
Resumoview Abstract Citations (40) References (27) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS High Spatial Resolution Imaging of Some of the Most Distant 3CR Galaxies Le Fevre, O. ; Hammer, F. ; Jones, J. Abstract New high spatial resolution, deep imaging of very distant 3CR radio galaxies has been obtained. The average seeing of the sample is ~ 0.8" FWHM with the best images reaching 0.6", thus allowing us to find new and unsuspected morphologies. The observed galaxies all show complex morphologies with multiple components. In two cases, 3C 238 and 3C 356, very compact objects have been found. When color information was available, strong color variations were observed among the individual components of the galaxies. For some of the sources we suggest gravitational amplification by foreground clusters of galaxies or galaxies as a possible interpretation. The radio galaxy 3C 238 seems to be an excellent gravitational lens candidate since two compact components with similar profiles and colors are located on either side of an extended object with a very different color index. 3C 241 and 3C 305.1 show an excellent radio/optical correspondence and we suggest that they may be affected by gravitational lensing. From these new data, we argue that the high-redshift 3CR radio-galaxies sample cannot be used in a simple way to test for galaxy evolution by means of a standard magnitude/color-redshift relationship. Publication: The Astrophysical Journal Pub Date: August 1988 DOI: 10.1086/185238 Bibcode: 1988ApJ...331L..73L Keywords: Gravitational Lenses; Image Resolution; Radio Galaxies; Spatial Resolution; Galactic Evolution; Galactic Structure; Red Shift; Astrophysics; GALAXIES: FORMATION; GRAVITATIONAL LENSES; RADIO SOURCES: GALAXIES full text sources ADS | data products SIMBAD (21) NED (6)
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