Gemini Observations of Galaxies in Rich Early Environments (GOGREEN) I : survey description

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Balogh , M L , Gilbank , D G , Muzzin , A , Rudnick , G , Cooper , M C , Lidman , C , Biviano , A , Demarco , R , McGee , S L , Nantais , J B , Noble , A , Old , L , Wilson , G , Yee , H K C , Bellhouse , C , Cerulo , P , Chan , J , Pintos-Castro , I , Simpson , R , van der Burg , R F J , Zaritsky , D , Ziparo , F , Victoria Alonso , M , Bower , R G , De Lucia , G , Finoguenov , A , Garcia Lambas , D , Muriel , H , Parker , L C , Rettura , A , Valotto , C & Wetzel , A 2017 , ' Gemini Observations of Galaxies in Rich Early Environments (GOGREEN) I : survey description ' , Monthly Notices of the Royal Astronomical Society , vol. 470 , no. 4 , pp. 4168-4185 .

Title: Gemini Observations of Galaxies in Rich Early Environments (GOGREEN) I : survey description
Author: Balogh, Michael L.; Gilbank, David G.; Muzzin, Adam; Rudnick, Gregory; Cooper, Michael C.; Lidman, Chris; Biviano, Andrea; Demarco, Ricardo; McGee, Sean L.; Nantais, Julie B.; Noble, Allison; Old, Lyndsay; Wilson, Gillian; Yee, Howard K. C.; Bellhouse, Callum; Cerulo, Pierluigi; Chan, Jeffrey; Pintos-Castro, Irene; Simpson, Rane; van der Burg, Remco F. J.; Zaritsky, Dennis; Ziparo, Felicia; Victoria Alonso, Maria; Bower, Richard G.; De Lucia, Gabriella; Finoguenov, Alexis; Garcia Lambas, Diego; Muriel, Hernan; Parker, Laura C.; Rettura, Alessandro; Valotto, Carlos; Wetzel, Andrew
Contributor: University of Helsinki, Department of Physics
Date: 2017-10
Language: eng
Number of pages: 18
Belongs to series: Monthly Notices of the Royal Astronomical Society
ISSN: 0035-8711
Abstract: We describe a new Large Program in progress on the Gemini North and South telescopes: Gemini Observations of Galaxies in Rich Early Environments (GOGREEN). This is an imaging and deep spectroscopic survey of 21 galaxy systems at 1 <z <1.5, selected to span a factor > 10 in halo mass. The scientific objectives include measuring the role of environment in the evolution of low-mass galaxies, and measuring the dynamics and stellar contents of their host haloes. The targets are selected from the SpARCS, SPT, COSMOS, and SXDS surveys, to be the evolutionary counterparts of today's clusters and groups. The new red-sensitive Hamamatsu detectors on GMOS, coupled with the nod-and-shuffle sky subtraction, allow simultaneous wavelength coverage over lambda similar to 0.6-1.05 mu m, and this enables a homogeneous and statistically complete redshift survey of galaxies of all types. The spectroscopic sample targets galaxies with AB magnitudes z' <24.25 and [3.6] mu m <22.5, and is therefore statistically complete for stellar masses M* greater than or similar to 10(10.3) M-circle dot, for all galaxy types and over the entire redshift range. Deep, multiwavelength imaging has been acquired over larger fields for most systems, spanning u through K, in addition to deep IRAC imaging at 3.6 mu m. The spectroscopy is similar to 50 per cent complete as of semester 17A, and we anticipate a final sample of similar to 500 new cluster members. Combined with existing spectroscopy on the brighter galaxies from GCLASS, SPT, and other sources, GOGREEN will be a large legacy cluster and field galaxy sample at this redshift that spectroscopically covers a wide range in stellar mass, halo mass, and clustercentric radius.
Subject: galaxies: clusters: general
galaxies: evolution
115 Astronomy, Space science

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