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Effects of large-scale AGN feedback in local galaxies

Published online by Cambridge University Press:  21 March 2013

Stanislav Shabala ,
Sugata Kaviraj  and
Joseph Silk
Stanislav Shabala
Affiliation:
School of Mathematics & Physics, Univ. of Tasmania, Private Bag 37, Hobart 7001, Australia email: Stanislav.Shabala@utas.edu.au
Sugata Kaviraj
Affiliation:
Department of Physics, University of Oxford, Keble Road, Oxford, OX1 3RH, UK
Joseph Silk
Affiliation:
Department of Physics, University of Oxford, Keble Road, Oxford, OX1 3RH, UK
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Abstract

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The effects of active galactic nucleus (AGN) feedback on group and cluster galaxies are investigated. We examine the colors of non-AGN hosts (i.e. satellite galaxies) by comparing galaxies overrun by radio AGN with similar galaxies located outside the radio AGN contours. We find that powerful Fanaroff-Riley type II (edge-brightened) radio AGN truncate star formation in the galaxies overrun by AGN-driven bow shocks. On the other hand, the ubiquitous Fanaroff-Riley type I (core-dominated) AGN do not affect neighboring galaxies. This result shows that, despite their rarity, feedback from powerful radio AGN is an important factor in the evolution of group/cluster galaxies.

Keywords

galaxies: active — galaxies: evolution — galaxies: photometry
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S292: Molecular Gas, Dust, and Star Formation in Galaxies , August 2012 , pp. 375
Copyright
Copyright © International Astronomical Union 2013

References

Shabala, S. S., Kaviraj, S., & Silk, J. 2011, MNRAS, 413, 2815Google Scholar