Deficiency of Broad Line AGNs in Compact Groups of Galaxies

Abstract

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.

Accepted for publication in ApJ Letter

References in corpus (6)

• The Host Galaxies and Classification of Active Galactic Nuclei
• Investigating on the nuclear obscuration in two types of Seyfert 2 galaxies
• The accretion ratios in Seyfert 2 galaxies with and without hidden broad-line regions
• Evidence for tidal interaction and merger as the origin of galaxy morphology evolution in compact groups
• Truncated Star Formation in Compact Groups of Galaxies: A Stellar Population Study
• Seyfert's Sextet: A Slowly Dissolving Stephan's Quintet?

Cited by in corpus (5)

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• Emission Line Galaxies and Active Galactic Nuclei in WINGS clusters
• Studying the evolution of galaxies in compact groups over the past 3 Gyr. I. The nuclear activity
• Host galaxy and orientation differences between AGN different types
• Stellar Population Properties of ETGs in Compact Groups of Galaxies