Bibcode
Davies, R. I.; Hicks, E.; Schartmann, M.; Genzel, R.; Tacconi, L. J.; Engel, H.; Burkert, A.; Krause, M.; Sternberg, A.; Mueller Sánchez, F.; Maciejewski, W.
Bibliographical reference
Co-Evolution of Central Black Holes and Galaxies, Proceedings of the International Astronomical Union, IAU Symposium, Volume 267, p. 283-289
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5
2010
Citations
11
Refereed citations
9
Description
Our adaptive optics observations of nearby AGN at spatial resolutions as
small as 0.″085 show strong evidence for recent, but no longer
active, nuclear star formation. We begin by describing observations that
highlight two contrasting methods by which gas can flow into the central
tens of parsecs. Gas accumulation in this region will inevitably lead to
a starburst, and we discuss the evidence for such events. We then turn
to the impact of stellar evolution on the further inflow of gas by
combining a phenomenological approach with analytical modelling and
hydrodynamic simulations. These complementary perspectives paint a
picture in which all the processes are ultimately regulated by the mass
accretion rate into the central hundred parsecs, and the ensuing
starburst that occurs there. The resulting supernovae delay accretion by
generating a starburst wind, which leaves behind a clumpy interstellar
medium. This provides an ideal environment for slower stellar outflows
to accrete inwards and form a dense turbulent disk on scales of a few
parsecs. Such a scenario may resolve the discrepancy between the larger
scale structure seen with adaptive optics and the small-scale structure
seen with VLTI.