NOAO >   Observing Info >   Approved Programs >   2016A-0376

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Program Information for 2016A-0376


PI: Guilin Liu, Virginia Polytechnic Institute, glliu@vt.edu
Address: Department of Physics, , Virginia Tech, , Blacksburg, VA, 24061 USA

CoI: Nadia Zakamska, Johns Hopkins U.
CoI: Rachael Alexandroff, Johns Hopkins U.
CoI: Fred Hamann, U. of Florida
CoI: Isabelle Paris, Universidad de Chile
CoI: Nicholas Ross, University of Edinburgh
CoI: Michael A Strauss, Princeton U.
CoI: Jenny Greene, Princeton U.
CoI: Carolin Villforth, U. of St. Andrews

Title: Signposts of Quasar Feedback in the High-Redshift Universe

Abstract: The prevalence and energetics of quasar feedback is a major unresolved problem in galaxy formation theory. We recently have found a sample of high-redshift quasars with extremely high infrared-to-optical ratios and NV/Ly-alpha line ratios, and strange emission line properties that precludes unambiguous classification as either classical type 1 or type 2 objects. Our follow-up VLT near-IR spectroscopy found extreme [O III]5007 kinematics in every case, with velocities of the ionized gas reaching >4000 km/sec, which cannot be confined by any realistic galaxy potential and indicates highly energetic outflows. We propose to conduct GMOS IFU spectroscopy of 6 of these unique, newly discovered objects at z=2.4-2.9 to determine the physical extents, morphology and gas kinematics of the UV line emission around them on galaxy-wide and intergalactic scales. If signatures of extremely powerful, gravitationally unbound and galaxy-wide outflows exist, these observations will become signposts of quasar feedback at the peak of the galaxy formation epoch.

Program Type: Standard/Extragalactic

Scheduled Nights:
Run 1 (2016A):  GEM-NQ/GMOSN -- 15hrs band 2 (GN-2016A-Q-48)


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 >   2016A-0376

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