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AGN and Star Formation Feedback in Galaxy Outflows

Published online by Cambridge University Press:  07 April 2020

Elisabete M. de Gouveia Dal Pino ,
William Clavijo-Bohórquez  and
Claudio Melioli
Elisabete M. de Gouveia Dal Pino
Affiliation:
Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG), Universidade de São Paulo, CEP 05508-090, São Paulo, Brazil emails: [email protected], [email protected]
William Clavijo-Bohórquez
Affiliation:
Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG), Universidade de São Paulo, CEP 05508-090, São Paulo, Brazil emails: [email protected], [email protected]
Claudio Melioli
Affiliation:
University of Modena, Italy
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Abstract

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Large-scale, broad outflows are common in active galaxies. In systems where star formation coexists with an AGN, it is unclear yet the role that both play on driving the outflows. In this work we present three-dimensional radiative-cooling MHD simulations of the formation of these outflows, considering the feedback from both the AGN and supernovae-driven winds. We find that a large-opening-angle AGN wind develops fountain structures that make the expanding gas to fallback. Furthermore, it exhausts the gas near the nuclear region, extinguishing star formation and accretion within a few 100.000 yr, which establishes the duty cycle of these outflows. The AGN wind accounts for the highest speed features in the outflow with velocities around 10.000 km s−1 (as observed in UFOs), but these are not as cold and dense as required by observations of molecular outflows. The SNe-driven wind is the main responsible for the observed mass-loading of the outflows.

Keywords

Galaxy: activeStar FormationSupernova
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S342: Perseus in Sicily: From Black Hole to Cluster Outskirts , May 2018 , pp. 229 - 233
Copyright
© International Astronomical Union 2020

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