Active Galactic Nuclei in Groups and Clusters of Galaxies: Detection and Host Morphology

Details Active Galactic Nuclei in Groups and Clusters of Galaxies: Detection and Host Morphology Active Galactic Nuclei in Groups and Clusters of Galaxies: Detection and Host Morphology

2009-11-02

arxiv.org/abs/0911.0392v1

Astrophysical Journal 707 (2009) 1691-1706

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

18 pages, 9 figures; accepted by The Astrophysical Journal; for higher-resolution versions of some figures, see http://u.ari

Scientific paper

10.1088/0004-637X/707/2/1691

The incidence and properties of Active Galactic Nuclei (AGN) in the field, groups, and clusters can provide new information about how these objects are triggered and fueled, similar to how these environments have been employed to study galaxy evolution. We have obtained new XMM-Newton observations of seven X-ray selected groups and poor clusters with 0.02 < z < 0.06 for comparison with previous samples that mostly included rich clusters and optically-selected groups. Our final sample has ten groups and six clusters in this low-redshift range (split at a velocity dispersion of $\sigma = 500$ km/s). We find that the X-ray selected AGN fraction increases from $f_A(L_X>10^{41}; M_R2.5}(L_X>10^{41}; M_R

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