The galaxy cluster evolution survey (glace): Introduction and first results

Aimed at understanding the evolution of galaxies in clusters, the GLACE survey is mapping a set of optical lines ([Oii]3727, [Oiii]5007, Hβ and Hα/[Nii] when possible) in several galaxy clusters at z ∼ 0.40, 0.63 and 0.86, using the Tuneable Filters (TF) of the OSIRIS instrument [7] at the 10.4 m GTC telescope. This study will address key questions about the physical processes acting upon the infalling galaxies during the course of hierarchical growth of clusters. GLACE is already ongoing: we present some preliminary results on our observations of the galaxy cluster Cl0024+1654 at z = 0.395; GLACE@0.86 has been approved as ESO/GTC large project to be started in 2011.