SIMBAD references

2010ApJ...716L.125K - Astrophys. J., 716, L125-L130 (2010/June-3)

Merging and clustering of the Swift BAT AGN sample.


Abstract (from CDS):

We discuss the merger rate, close galaxy environment, and clustering on scales up to an Mpc of the Swift BAT hard X-ray sample of nearby (z<0.05), moderate-luminosity active galactic nuclei (AGNs). We find a higher incidence of galaxies with signs of disruption compared to a matched control sample (18% versus 1%) and of close pairs within 30 kpc (24% versus 1%). We also find a larger fraction with companions compared to normal galaxies and optical emission line selected AGNs at scales up to 250 kpc. We hypothesize that these merging AGNs may not be identified using optical emission line diagnostics because of optical extinction and dilution by star formation. In support of this hypothesis, in merging systems we find a higher hard X-ray to [O III] flux ratio, as well as emission line diagnostics characteristic of composite or star-forming galaxies, and a larger IRAS 60 µm to stellar mass ratio.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: interactions - X-rays: galaxies

Simbad objects: 75

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2010ApJ...716L.125K and select 'bookmark this link' or equivalent in the popup menu


© Université de Strasbourg/CNRS

    • Contact