NOAO >   Observing Info >   Approved Programs >   2017B-0101

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Program Information for 2017B-0101


PI: Gordon Richards, Drexel U., gtr@physics.drexel.edu
Address: Dept. of Physics, 3141 CHESTNUT ST, PHILADELPHIA, PA 19104 USA

CoI: Joe Hennawi, UC Santa Barbara
CoI: Angelica Rivera, Drexel U.
CoI: Nicholas Ross, University of Edinburgh
CoI: John Timlin, Drexel U.
CoI: Adam Myers, U. of Wyoming
CoI: Stephanie LaMassa, STScI
CoI: Eilat Glikman, Middlebury College
CoI: Daryl Haggard, McGill University
CoI: C. Megan Urry, Yale U.
CoI: Mark Lacy, NRAO Headquarters
CoI: W. Niel Brandt, Pennsylvania State U.

Title: Discovery and Investigation into the Type-2 High-redshift QSO Population

Abstract: A major prediction of the AGN Unification model is that the viewing angle with respect to a dusty torus is the primary factor determining whether one observes a Type-1 AGN, with broad emission lines, or a Type-2 AGN, with only narrow lines. Type-2 AGN have been readily identified at low redshift (z<1). However, only handfuls of bonafide Type-2 QSOs are known at redshifts z~2 with bolometric luminosities that are comparable to the typical luminosity of SDSS Type-1 QSOs. The conspicuous lack of luminous Type-2 QSOs at high-redshift constitutes a major unsolved problem. Here we propose to obtain Gemini-GNIRS spectra of 26 bright Type-2 QSO candidates from SDSS Stripe 82, photometrically selected from a new WISE 22um (W4) selection technique in order to identify and investigate the elusive high-z Type-2 QSO population.

Program Type: Standard/Extragalactic

Scheduled Nights:
Run 1 (2017B):  GEM-NQ/GNIRS -- 32.5hrs band 2 (GN-2017B-Q-51)


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 >   2017B-0101

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