NOAO >   Observing Info >   Approved Programs >   2016B-0180

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Program Information for 2016B-0180


PI: Thomas H. Puzia, Pontificia Universidad Catolica de Chile, tpuzia@astro.puc.cl
Address: Instituto de Astrofisica, Casilla 306, Santiago 22 Chile

CoI: Karen Ribbeck, Pontificia Universidad Catolica de Chile
CoI: Bryan Miller, Gemini Observatory
CoI: Rodrigo Carrasco, Gemini Observatory
CoI: Matthew Taylor, Pontificia Universidad Catolica de Chile
CoI: Paul Goudfrooij, STScI
CoI: Sibilla Perina, Pontificia Universidad Catolica de Chile
CoI: Peter Pessev, Gran Telescopio de Canarias, La Palma, Spain
CoI: Aaron Dotter, Australian National U.
CoI: Ata Sarajedini, U. of Florida
CoI: Mirko Simunovic, Pontificia Universidad Catolica de Chile

Title: The GeMS/GSAOI Galactic Globular Cluster Survey (G4CS)

Abstract: Galactic globular cluster are crucial laboratories and benchmarks for our understanding of the nearby and distant universe. We will use the GeMS/GSAOI instrument to obtain deep JHK photometry of all Milky Way globular clusters that were previously observed by the HST/ACS Galactic Globular Cluster Survey and the HST UV Legacy Survey of Galactic Globular Clusters in the UV and optical filters and that are accessible to GSAOI in period 2016B. With these data we will i) study the morphology of near-IR CMDs and determine the internal consistency of model CMD predictions for various JHK filter combinations and test the influence of molecular absorption band variations on theoretical isochrone predictions in the near-IR using abundance measurments from high-resolution spectroscopy, ii) derive absolute GC ages to within a Gyr and corresponding metallicities with uncertainties Delta(Z)~0.1 dex, and iii) use the combined optical/near-IR CMDs to investigate the internal consistency and calibration of various stellar evolution models.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2016B):  GEM-SQ/GSAOI -- 1hrs band 2 (GS-2016B-Q-56)


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 >   2016B-0180

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