Deficiency of Broad Line AGNs in Compact Groups of Galaxies

Details Deficiency of Broad Line AGNs in Compact Groups of Galaxies Deficiency of Broad Line AGNs in Compact Groups of Galaxies

2008-03-25

arxiv.org/abs/0803.3506v1

Astronomy and Astrophysics

Astrophysics

Accepted for publication in ApJ Letter

Scientific paper

10.1086/588498

Based on a new survey of AGN activity in Compact Groups of Galaxies, we report a remarkable deficiency of Broad Line AGNs as compared to Narrow Line AGNs. The cause of such deficiency could be related to the average low luminosity of AGNs in CGs: $10^{39}$ erg s$^{-1}$. This result may imply lower accretion rates in CG AGNs, making Broad Line Regions (BLR) undetectable, or may indicate a genuine absence of BLRs. Both phenomena are consistent with gas stripping through tidal interaction and dry mergers.

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