NOAO >   Observing Info >   Approved Programs >   2016A-0432

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Program Information for 2016A-0432


PI: Ana Chies Santos, UFRGS, ana.chies@ufrgs.br
Address: Departamento de Astronomia - IF, Av. Bento Gonçalves, 9500, Campus do Vale, 91540-000 - Porto Alegre - RS Brazil

CoI: John Blakeslee, Herzberg Institute of Astrophysics
CoI: Jenny Greene, Princeton U.
CoI: Chung-Pei Ma, UC Berkeley
CoI: Arianna Cortesi, IAGUSP
CoI: Nicholas McConnell, Herzberg Institute of Astrophysics
CoI: Michele Cantiello, INAF/Teramo
CoI: Emilio Zanatta, UFRGS

Title: Probing Assembly Histories of MASSIVE Survey Galaxies from their Globular Cluster Colors

Abstract: Massive early-type galaxies exhibit the most massive black holes, the largest number of globular clusters, most extreme stellar IMFs, and most dramatic size evolution over cosmic time. Globular cluster (GCs) are powerful probes to study the evolutionary histories of galaxies, tracing their major star forming episodes. They are found around all major galaxies and are easy to see far beyond the Local Group. Their size correlates with dark matter halo and black hole mass. Their colors, especially the combination of infrared and optical, can tell us about the assembly history of their host galaxies, being proxies for age and metallicity, especially in the outer halo regions that are difficult to probe only from the stellar light. We request GMOS g and i observations for 7 galaxies in the MASSIVE survey that, together with HST/WFC3 imaging data, will allow the study of globular cluster systems of MASSIVE survey galaxies and outer halo assembly. The MASSIVE survey is a volume-limited survey of the structure and dynamics of the 100 most massive early-type galaxies within ~100Mpc. This regime is of utmost importance for the understanding of the assembly of galaxies. Yet, no survey up to date has gone for this volume and mass-range to systematically study the globular clusters of the most massive spheroidal galaxies.

Program Type: Standard/Extragalactic

Scheduled Nights:
Run 1 (2016A):  GEM-NQ/GMOSN -- 6hrs band 3 (GN-2016A-Q-93)


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 >   2016A-0432

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