Tanya Urrutia (AIP)

Feedback in action in luminous, young, dust-reddened QSOs
When Mar 02, 2012 from 10:30 AM to 12:00 PM
  • Colloquium
Where SH, Lecture hall
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Quasar feedback has long been invoked as the mechanism to exert 'negative' influence on kpc to Mpc scales to curtail star formation in its host galaxy, and/or further accretion onto the Supermassive Black Hole itself. Quasar mode feedback has recently become a heavily studied topic, due to the realization that it may play a fundamental role in the assembly history of galaxies. I will present evidence for quasar mode feedback via line driven winds in samples of dust reddened Low Ionization Broad Absorption quasars. These quasars are accreting at very high efficiencies and thus are very bright in the infrared. They are much more common at z  > 0.5 than originally thought, by up to a factor of ten due to the obscuration in the optical and UV and the suppression of the emission lines typically found in quasars. Finally, I will present an outlook on possible future observations for these objects.