other query modes : |
Identifier query |
Coordinate query |
Criteria query |
Reference query |
Basic query |
Script submission |
TAP |
Output options |
Object types |
Help |
2003MNRAS.346..229B - Mon. Not. R. Astron. Soc., 346, 229-250 (2003/November-3)
The cluster environments of radio-loud quasars at 0.6 < z < 1.1.
BARR J.M., BREMER M.N., BAKER J.C. and LEHNERT M.D.
Abstract (from CDS):
We find that in optical searches for galaxy overdensities above z ∼ 0.6, multiple filters must be used. If the single-filter counting statistics used by groups at lower redshift are applied to our data, uncertainties are too large to make accurate quantifications of cluster richness. This means that genuine clustering of galaxies about quasars will be missed and, in ∼10 per cent of cases, putative clusters turn out to be false detections. The statistics are further diluted by the fact that galaxy overdensities are generally not centred on the quasar.
Abstract Copyright: 2003 RAS
Journal keyword(s): galaxies: active - galaxies: clusters: general - quasars: general
Simbad objects: 28
To bookmark this query, right click on this link: simbad:2003MNRAS.346..229B and select 'bookmark this link' or equivalent in the popup menu