PI: Paul Martini, Ohio State U., firstname.lastname@example.org
Address: Department of Astronomy, 174 AVENUE, COLUMBUS, OH 43210-1106 USA
CoI: Suk Sien Tie, Ohio State U.
CoI: Richard McMahon, University of Cambridge
CoI: Sophie Reed, University of Cambridge
Title: Search for z>6 QSOs with the Dark Energy Survey
Abstract: We propose to use GMOS on Gemini South to continue our successful program to spectroscopically confirm new z>6 QSOs selected from izYJ observations from the Dark Energy Survey (DES) and infrared observations from the VISTA Hemisphere Survey (VHS) and WISE. DES has just completed the 3rd of five years of observation and has now mapped ~5000 square degrees. We aim to identify 5-10 new QSOs at z>6 (3-5 QSOs at z>6.5) with this proposal. These QSOs are important for three reasons: 1) new, bright QSOs at these redshifts provide valuable sightlines for the study of the topology of reionization; 2) the growth of black holes at these early times provides a joint constraint on their growth rate and seed black hole masses; 3) the evolution of the QSO space density is an important probe of the fraction of dark matter halos that host quasars at these early times.
Program Type: Standard/Extragalactic
Run 1 (2016B): GEM-SQ/GMOSS -- 10hrs band 1 (GS-2016B-Q-15)
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360