Detail for Program: GN-2009A-Q-1

Program: GN-2009A-Q-1

Title:

The Gemini Cluster Astrophysics Spectroscopic Survey (GCLASS)

PI:

Gillian Wilson

Co-I(s):

Howard Yee, Adam Muzzin, Micheal Balogh, Ricardo Demarco, Erica Ellingson, Jonathan Gardner, David Gilbank, Mike Gladders, Henk Hoekstra, Mark Lacy, Subhabrata Majumdar, Jason Surace, Tracy Webb, Renbin Yan

Abstract

We propose an extensive spectroscopic survey using GMOS of 10 rich clusters at z ~ 1.1 drawn from the SpARCS IR cluster survey. These data will be used in conjunction with multiwavelength optical/NIR/MIR photometry to study the SFRs, stellar masses, merger rates, and dynamics of galaxies in high-redshift, high-density environments. This project will be the first to use a homogeneously-selected sample of clusters at z > 1, and will build upon the extensive spectroscopic datasets collected by the CNOC1/MORPHS and RCS/EDiSCS surveys at z = 0.3 and z = 0.7 respectively, providing complementary observations at the highest redshift still observable within the optical window. These data will also be used to study dynamics of clusters during their most active accretion phase, and to determine velocity dispersions, which will allow the first calibration of a mass-richness relation for clusters at z > 1. This project takes advantage of the unique microslit capability of GMOS in band-shuffle mode which allows the compact placement of up to 40 slits in only a ~ 1.7' area. This capability makes GMOS ~ 5 times more efficient than Keck/DEIMOS or VLT/FORS2 at obtaining redshifts within the cluster virial radius at z > 1.

Publications using this program's data

[data] [ADS] The Gemini Cluster Astrophysics Spectroscopic Survey (GCLASS): The Role of Environment and Self-regulation in Galaxy Evolution at z ~ 1

[data] [ADS] The environmental dependence of the stellar mass function at z ~ 1. Comparing cluster and field between the GCLASS and UltraVISTA surveys

[data] [ADS] A Kinematic Approach to Assessing Environmental Effects: Star-forming Galaxies in a z ~ 0.9 SpARCS Cluster Using Spitzer 24 μm Observations

[data] [ADS] The importance of major mergers in the build up of stellar mass in brightest cluster galaxies at z = 1

[data] [ADS] A census of stellar mass in ten massive haloes at z ~ 1 from the GCLASS Survey

[data] [ADS] The Phase Space and Stellar Populations of Cluster Galaxies at z ~ 1: Simultaneous Constraints on the Location and Timescale of Satellite Quenching

[data] [ADS] Evidence for the Universality of Properties of Red-sequence Galaxies in X-Ray- and Red-Sequence-Selected Clusters at z ~ 1

[data] [ADS] The accelerated build-up of the red sequence in high-redshift galaxy clusters

[data] [ADS] The Phase Space of z~1.2 SpARCS Clusters: Using Herschel to Probe Dust Temperature as a Function of Environment and Accretion History

[data] [ADS] Evidence for a change in the dominant satellite galaxy quenching mechanism at z = 1

[data] [ADS] The dynamics of z ~ 1 clusters of galaxies from the GCLASS survey

[data] [ADS] The morphological transformation of red sequence galaxies in clusters since z ˜ 1

[data] [ADS] HST/WFC3 grism observations of z ˜ 1 clusters: the cluster versus field stellar mass-size relation and evidence for size growth of quiescent galaxies from minor mergers

[data] [ADS] HST/WFC3 grism observations of z ∼ 1 clusters: evidence for evolution in the mass-size relation of quiescent galaxies from post-starburst galaxies

[data] [ADS] HST/WFC3 Grism Observations of z 1 Clusters: Evidence for Rapid Outside-in Environmental Quenching from Spatially Resolved Hα Maps

[data] [ADS] Satellite quenching was not important for z ∼ 1 clusters: most quenching occurred during infall