NOAO >   Observing Info >   Approved Programs >   2014A-0480

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Proposal Information for 2014A-0480


PI: R. Michael Rich, UCLA, rmr@astro.ucla.edu
Address: Physics Department, 430 Portola Plaza, Los Angeles, CA 90095-1547, USA

CoI: Andrea Kunder, Astronomisches Institut Potsdam
CoI: Christian Johnson, Harvard/Smithsonian Center for Astrophysics
CoI: Scott Michael, Indiana University
CoI: Will Clarkson, University of Michigan-Dearborn
CoI: Mike Irwin, Institute of Astronomy, Cambridge
CoI: Rodrigo Ibata, Strasbourg Observatory
CoI: Mario Soto, Space Telescope Science Institute
CoI: Zejko Ivezic, University of Washington
CoI: R. de Propris, ESO
CoI: Annie Robin, besancon Observatory
CoI: Andreas Koch, ZAH-Heidelberg
CoI: Mike Young, Indiana University
CoI: Caty Pilachowski, Indiana University
CoI: Kathy Vivas, CIDA
CoI: Michelle Collins, MPIA-Heidelberg

Title: The Blanco DECam Galactic Bulge Survey: Completing the Southern Bulge

Abstract: We propose to complete our survey of the Southern Galactic bulge and the core of the Sagittarius Dwarf Spheroidal galaxy using the Dark Energy Camera on the Blanco telescope. Our goal in 2014A is to complete the Southern bulge, mapping the the bulge/disk interface from -10^\circ < l < -5^\circ and +5^\circ < l < +10^\circ. With its 3 square degree field of view, DECam will provide SDSS ugriz photometry spanning the entirety of the bulge and inner disk, enabling a study of age and metallicity gradients in the main stellar population, The unprecedented quality of data in bluer filters makes possible the mapping of the ``X- shaped bulge'' and other substructure or streams as a function of metallicity. We will also map the core of the Sgr dwarf spheroidal galaxy and its overlap with the bulge. The use of proper motion separation will strengthen our population definition with time. The u filter allows us to map and study the hot blue horizontal branch in the bulge, and allows derivation of reddening, metallicity, and photometric distance for the population using demonstrated methods first developed for SDSS. A team experienced in both the construction of large area surveys and with supercomputing access and experience, will produce a photometric/astrometric dataset that will be made available to the community.


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 >   2014A-0480

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