The AGN Fueling/Feedback Cycle: A Multiphase Study of a Sample of Local Radio Galaxies
Date Issued
2018
Author(s)
Abstract
A key mode of AGN feedback is energy input from radio-emitting jets; this is common in massive early-type galaxies (ETG) and drives interactions with the multiphase intergalactic medium (IGM) surrounding them. The mechanisms by which jetted AGN are fuelled and the way in which this forms part of a feedback loop are not yet understood. A systematic study of the various gas phases (ionised and molecular) and of the stellar and dust components in a the cores of a representative sample of massive, radio-loud ETGs (in which jets are currently active) is needed to provide a crucial comparison to existing studies of radio-quiet ETGs (e.g. ATLAS^3D; Cappellari et al. 2011). In particular, it will enable a better understanding of the feeding of AGNs, and will isolate the role played by jet-induced feedback (likely the dominant feedback mode in local, massive ETGs) in the overall formation and evolution of ETGs. In this talk I will present the first results of an ongoing multiphase study of a volume-limited sample (z<0.03) of radio galaxies. For all sources, we have already gathered VLT/VIMOS IFS observations (Warren et al. in prep.) and 12CO(2-1) APEX observations (Prandoni et al. 2010; Laing et al. in prep.). ALMA follow-up for observations were obtained in Cycle 3. (Ruffa et al. in prep.).
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Prandoni_mAGNfeeds18.pdf
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