NOAO >   Observing Info >   Approved Programs >   2013A-0343

Small NOAO Logo

Proposal Information for 2013A-0343


PI: Guilin Liu, Johns Hopkins University, liu@pha.jhu.edu
Address: Department of Physics and Astronomy, 3400 N. Charles Street, Baltimore, MD 21218, USA

CoI: Nadia L. Zakamska, Johns Hopkins University
CoI: Michael A. Strauss, Princeton University
CoI: Jenny E. Greene, Princeton University
CoI: Rachael Alexandroff, Johns Hopkins University

Title: Quasar Feedback at the Peak of Galaxy Formation Epoch

Abstract: The correlations between properties of supermassive black holes and stellar spheroids in galaxies imply a physical connection between these two components in spite of their vastly different masses and physical scales. Using Gemini GMOS IFU, we demonstrated that powerful ionized gas winds are a ubiquitous feature in luminous radio-quiet obscured z~ 0.5 quasars. We now plan to extend this discovery to the era of peak galaxy formation and quasar activity - to the epoch when feedback was most prominent and the galaxy vs. black hole correlations were established. We propose a GMOS IFU survey to map the spatial distribution and the kinematics of Ly(alpha) and N \sc v 1240\AA\ emission around 5 obscured quasars at z=3-3.4. We will use Ly(alpha) observations to directly probe the effects of ionizing radiation of obscured quasars on their large-scale environments and N \sc v observations to look for signatures of unbound quasar-driven outflows. We will observe in the g-band on sub-galactic and galaxy- wide scales (spatial resolution 3-6 kpc, field of view 40\times50 kpc^2 at z=3). Obscured quasars likely constitute the majority of the quasar population and may represent the relatively early enshrouded phase of black hole growth; thus, luminous obscured quasars are the most likely sites of quasar ionization- and wind-feedback, as we found at low redshifts. Our proposed GMOS observations will provide a definitive probe of the effects of quasars on their galaxy-wide and large-scale environments close to the peak of galaxy formation epoch.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2013A-0343

noaoprop-help@noao.edu

Small NOAO Logo