NOAO >   Observing Info >   Approved Programs >   2015A-0415

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Program Information for 2015A-0415


PI: Katherine L Rhode, Indiana U., krhode@indiana.edu
Address: Department of Astronomy, 727 E. Third Street, Bloomington, IN 47405 USA

CoI: Eileen Friel, Indiana U.
CoI: Enrico Vesperini, Indiana U.
CoI: Michael M Briley, Appalachian State U.
CoI: Jeffrey Gerber, Indiana U.
CoI: Owen Boberg, Indiana U.

Title: Pilot Project for the WIYN Indiana Northern Globular Survey (WINGS): u'g'i' Imaging of Milky Way Globular Clusters

Abstract: Globular clusters are astronomical objects that are of vital importance to many different areas of modern astrophysics research. Until recently, they were believed to be "simple stellar populations", systems composed of stars with the same age and initial chemical composition. The discovery that globular clusters actually contain multiple stellar populations, with different ages and abundances, has raised many fundamental questions concerning all aspects of the formation and dynamical evolution of these important objects. We propose to use the upgraded WIYN ODI camera to obtain deep imaging of three Galactic globular clusters (M71, M12, and M15) in the $u'g'i'$ filters. The goal is to detect and quantify the properties of the multiple stellar populations in the clusters out to very large radius. We will combine these observations with theoretical simulations to investigate specific questions in multiple populations research, including investigating both the global fraction of the first- and second-generation stars in the clusters, and how that fraction varies with radius. This observing run is a pilot study for the imaging portion of WINGS; WINGS is a planned comprehensive survey of a large sample of northern Galactic globular clusters with WIYN ODI and Hydra.

Program Type: ITAC

Scheduled Nights:
Run 1 (2015A):  WIYN/pODI -- 3n on Jul 16 - Jul 18 2015


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 >   2015A-0415

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