SIMBAD references

2001MNRAS.321..515M - Mon. Not. R. Astron. Soc., 321, 515-524 (2001/March-1)

The cluster environments of powerful radio-loud and radio-quiet active galactic nuclei.


Abstract (from CDS):

The spatial clustering amplitude (Bgq) is determined for a sample of 44 powerful active galactic nuclei (AGN) at z≃0.2. No significant difference is detected in the richness of the cluster environments of the radio-loud and radio-quiet subsamples, both of which typically inhabit environments as rich as Abell class ≃0. Comparison with radio luminosity-matched samples from Hill & Lilly and Wold et al. suggests that there is no epoch-dependent change in environment richness out to at least z≥0.5 for either radio galaxies or radio quasars. Comparison with the APM cluster survey shows that, contrary to current folklore, powerful AGN do not avoid rich clusters, but rather display a spread in cluster environment, which is perfectly consistent with being drawn at random from the massive elliptical population. Finally, we argue that virtually all Abell class ≃0 clusters contained an active galaxy during the epoch of peak quasar activity at z∼2.5.

Abstract Copyright: Blackwell Science Ltd

Journal keyword(s): galaxies: active - galaxies: clusters: general - quasars: general

Simbad objects: 45

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2001MNRAS.321..515M and select 'bookmark this link' or equivalent in the popup menu


© Université de Strasbourg/CNRS

    • Contact