NOAO >   Observing Info >   Approved Programs >   2016A-0132

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Program Information for 2016A-0132


PI: Rodrigo Carrasco, Gemini Observatory, rcarrasco@gemini.edu
Address: Gemini Observatory, Colina El Pino s/n, La Serena Chile

CoI: Christopher Conselice, University of Nottingham
CoI: Carl Mundy, University of Nottingham
CoI: Jamie Ownsworth, University of Nottingham
CoI: Kenneth Duncan, Leiden Observatory

Title: Investigating galaxy structure and mass assembly at z>3 with GeMS/GSAOI

Abstract: Our knowledge of the internal processes involved in galaxy formation mostly come from deep surveys using the power of the Hubble Space Telescope coupled with ground based imaging and spectroscopy. However, one important limitation for studying galaxies at z>3 is that the HST sensitivity cut-offs of redwards 1.7 microns, giving us only a UV view of systems at these highest redshifts where galaxies are first forming their structure. A rest-frame optical view is however necessary to decipher the formation modes and true structures of these galaxies, which cannot be obtained from HST. We thus propose to obtain high resolution deep imaging in the K-band with GeMS/GSAOI of two feilds in the CANDELS region of the COSMOS field. This will extend the study of the galaxy population in the field at z=3-4.5 to measure accurate sizes, sersic indices and asymmetries at this epoch. The exquisite image quality provided by the GeMS, and its infrared imager GSAOI, together with the large field of view will allow to study 40 massive z > 3 galaxies at a sub-kiloparsec resolution in the rest-frame optical. This will provide the first picture of the structural properties of galaxies a z>3 in the rest-frame optical, and will allow us to extend size and basic structure measures and their connection to lower redshift to a still unexplored epoch.

Program Type: Standard/Extragalactic

Scheduled Nights:
Run 1 (2016A):  GEM-SQ/GSAOI -- 20hrs band 2 (GS-2016A-Q-67)


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-0132

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