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Do stellar winds play a decisive role in feeding AGN?
Davies, R.; Burtscher, L.; Dodds-Eden, K. et al.
2012In Journal of Physics Conference Series
 

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Abstract :
[en] While the existence of a starburst-AGN connection is undisputed, there is no consensus on what the connection is. In this contribution, we begin by noting that the mechanisms which drive gas inwards in disk galaxies are generally inefficient at removing angular momentum, leading to stalled inflows. Thus, a tiered series of such processes is required to bring gas to the smallest scales, each of which on its own may not correlate with the presence of an AGN. Similarly, each may be associated with a starburst event, making it important to discriminate between 'circumnuclear' and 'nuclear' star formation. In this contribution, we show that stellar feedback on scales of tens of parsecs plays a critical role in first hindering and then helping accretion. We argue that it is only after the initial turbulent phases of a starburst that gas from slow stellar winds can accrete efficiently to smaller scales. This would imply that the properties of the obscuring torus are directly coupled to star formation and that the torus must be a complex dynamical entity. We finish by remarking on other contexts where similar processes appear to be at work.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Davies, R.;  Max-Planck-Institut für extraterrestrische Physik
Burtscher, L.
Dodds-Eden, K.
Orban De Xivry, Gilles  ;  Max-Planck-Institut für extraterrestrische Physik
Language :
English
Title :
Do stellar winds play a decisive role in feeding AGN?
Publication date :
July 2012
Event name :
The Central Kiloparsec in Galactic Nuclei
Event place :
Koeln, Germany
Event date :
09/2011
Audience :
International
Main work title :
Journal of Physics Conference Series
Collection name :
Volume 372
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