Gemini Observations of Galaxies in Rich Early Environments (GOGREEN) I: survey description
AuthorBalogh, Michael L.
Gilbank, David G.
McGee, Sean L.
Nantais, Julie B.
Yee, Howard K. C.
van der Burg, Remco F. J.
Alonso, María Victoria
Bower, Richard G.
De Lucia, G.
Lambas, Diego Garcia
Parker, Laura C.
AffiliationUniv Arizona, Steward Observ & Dept Astron
MetadataShow full item record
PublisherOXFORD UNIV PRESS
CitationGemini Observations of Galaxies in Rich Early Environments (GOGREEN) I: survey description 2017, 470 (4):4168 Monthly Notices of the Royal Astronomical Society
Rights© 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society
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AbstractWe 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.
VersionFinal published version
SponsorsNSERC Discovery grants; Universidad Andres Bello internal project grants [DI-651-15/R, DI-18-17/RG]; NSF [AST-1517815, AST-1211358, AST-1517863, AST-1518257]; NASA [AR-14310.001, GO-12945.001-A, GO-13306, GO-13677, GO-13747, GO-13845/14327, NAS 5-26555]; Space Telescope Science Institute [AR-13242, AR-14289, HST-GO-14734]; STFC; BASAL Center for Astrophysics and Associated Technologies (CATA); FONDECYT ; European Research Council under FP7 ; National Research Foundation of South Africa; Chandra grant [AR6-17014B]; FONDECYT postdoctoral research ; Caltech-Carnegie Fellowship; Max-Planck-Institute for Extraterrestrial Physics; European Southern Observatory; International Space Sciences Institute; Moore Center for Theoretical Cosmology and Physics at Caltech