Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-10-15
Astronomy and Astrophysics
Astrophysics
To appear in the proceedings of the annual meeting of the French Society of Astronomy and Astrophysics (SF2A) Paris, July 2008
Scientific paper
To accommodate the seemingly "anti-hierarchical" properties of galaxies near the upper end of the mass function within our hierarchical paradigm, current models of galaxy evolution postulate a phase of vigorous AGN feedback at high redshift, which effectively terminates star formation by quenching the supply of cold gas. Using the SINFONI IFU on the VLT, we identified kpc-sized outflows of ionized gas in z~2-3 radio galaxies, which have the expected signatures of being powerful AGN-driven winds with the potential of terminating star formation in the massive host galaxies. The bipolar outflows contain up to few x 10^10 M_sun in ionized gas with velocities near the escape velocity of a massive galaxy. Kinetic energies are equivalent to ~0.2% of the rest mass of the supermassive black hole. We discuss the results of this on-going study and the global impact of the observed outflows.
Lehnert Matt D.
Nesvadba Nicole P. H.
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