NOAO >   Observing Info >   Approved Programs >   2018A-0264

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Program Information for 2018A-0264


PI: Paul J Green, Harvard-Smithsonian Center for Astrophysics, pgreen@cfa.harvard.edu
Address: 60 GARDEN STREET, CAMBRIDGE, MA 02138 USA

CoI: Chelsea MacLeod, Harvard-Smithsonian Center for Astrophysics
CoI: Scott F Anderson, U. of Washington
CoI: Mike Eracelous, Pennsylvania State U.
CoI: John Ruan, McGill University
CoI: Jessie Runnoe, U. of Michigan
CoI: Matthew Graham, IPAC
CoI: Francesca Civano, Harvard-Smithsonian Center for Astrophysics

Title: Changing-Look Quasars: Radical Changes in Accretion Rate?

Abstract: We propose to monitor via optical photometry and spectroscopy a pilot sample of high-quality changing-look quasar candidates that have existing X-ray observations. If trigger conditions are met by any candidate, we will obtain a target-of-opportunity Chandra observation, providing crucial X-ray spectral Constraints on major accretion state transitions in luminous quasars. Note: Time has already been awarded for this ToO program via the Chandra/NOAO joint program.

Program Type: Standard/Extragalactic

Scheduled Nights:
Run 1 (2018A):  GEM-NQ/GMOSN -- 5.2hrs band 2 (GN-2018A-Q-227 )


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 >   2018A-0264

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