Relationship between AGNs and Environment. Deficiency of BLAGNs in Compact Groups

Details Relationship between AGNs and Environment. Deficiency of BLAGNs in Compact Groups Relationship between AGNs and Environment. Deficiency of BLAGNs in Compact Groups

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aspc..421..125m&link_type=abstract

Galaxies in Isolation: Exploring Nature Versus Nurture, proceedings of a conference held 12 to 15 May 2009 in Granada, Spain. Ed

Astronomy and Astrophysics

Astronomy

Scientific paper

After analysis of the frequency and nature of nuclear activity in two samples of Compact Groups (CGs) of Galaxies we find a remarkable deficiency of Broad Line AGNs relative to Narrow Line AGNs, despite the high frequency of active nuclei found in these groups. The cause of the deficiency may be related to the typical compact group environment. The average low luminosity of AGNs (1039 erg s-1) in CGs implies lower accretion rates resulting in Broad Line Regions (BLR) that are undetectable or absent.

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