Description: | Theoretical studies predict that the feedback of active galactic nuclei is capable of affecting the evolution of galaxies, and observational data have confirmed the presence of molecular gas outflows in more than 50 galaxies. These outflows are often massive, carrying hundreds to thousands of solar masses of gas per year. In this talk, I will review properties of the outflowing gas and compare them with those of the ambient star-forming gas. I will focus on data for the galaxy 4C12.50, the outflow of which is thought to be jet-driven. A high 400K-to-25K gas mass ratio in the outflow of this system points to heating of the accelerated gas, to the point where star formation is inefficient. Heating of the molecular gas could facilitate its discovery in intermediate/high-z systems with ALMA. |