Lorentz Center - Lorentz Center Highlights
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    Lorentz Center Highlights

Roberto Maiolino


ABSTRACT: Both active star formation and supermassive black hole accretion can drive very energetic winds that can expel large amount of gas out of galaxies. I will present some recent observational results illustrating the dramatic effect that such winds can have on galaxy evolution. In particular, in some cases these energetic winds can clean galaxies of most of their gas content. This may result in a significant suppression of star formation in galaxies. However, I will also show that the gas expelled out of galaxies is not simply lost, it can also undergo compression, fragementation and finally form new stars. This is a completely new mode of star formation, occurring outside galactic discs, and resulting in stars with very high velocities, potentially even escaping the galaxy. I will shortly discuss the potential implications of this new mode of star formation.