other query modes : |
Identifier query |
Coordinate query |
Criteria query |
Reference query |
Basic query |
Script submission |
TAP |
Output options |
Object types |
Help |
2000MNRAS.317..720B - Mon. Not. R. Astron. Soc., 317, 720-736 (2000/September-3)
The cluster environments of the z∼1 3CR radio galaxies.
BEST P.N.
Abstract (from CDS):
These data are complemented by J-band images also from UKIRT, and by optical images from the Hubble Space Telescope. The fields of the lower redshift (z≲0.9) radio galaxies in the sample generally show well-defined near-infrared colour-magnitude relations with little scatter, indicating a significant number of galaxies at the redshift of the radio galaxy; the relations involving colours at shorter wavelengths than the 4000Å break show considerably greater scatter, suggesting that many of the cluster galaxies have low levels of recent or on-going star formation. At higher redshifts the colour-magnitude sequences are less prominent owing to the increased field galaxy contribution at faint magnitudes, but there is a statistical excess of galaxies with the very red infrared colours (J-K≳1.75) expected of old cluster galaxies at these redshifts.
Although these results are appropriate for the mean of all of the radio galaxy fields, there exist large field-to-field variations in the richness of the environments. Many, but certainly not all, powerful z∼1 radio galaxies lie in (proto)cluster environments.
Abstract Copyright: 2000, Royal Astronomical Society
Journal keyword(s): galaxies: active - galaxies: clusters: general - galaxies: luminosity function, mass function - radio continuum: galaxies
Simbad objects: 31
To bookmark this query, right click on this link: simbad:2000MNRAS.317..720B and select 'bookmark this link' or equivalent in the popup menu