Speaker
Wako Ishibashi
(ETH Zurich)
Description
Black hole feedback is often invoked to suppress star formation in galaxies by
driving galaxy-scale outflows. However, radiative feedback from the central black
hole may actually trigger star formation within those galactic outflows. In our
picture, new stars are formed at increasingly larger radii in the outflowing shell,
with young stellar populations gradually populating the outer regions of the galaxy.
This particular form of star formation may be most relevant in high redshift
galaxies, affecting spatial scales ranging from the central nucleus to the galaxy
outskirts. Following the episode of star formation triggering, the remaining dusty
gas may be cleared out of the galaxy.
I will discuss how the interplay between such positive and negative feedback may both
trigger and quench star formation in galaxies.
Primary author
Wako Ishibashi
(ETH Zurich)
