An optical/near-infrared survey of GCs in early-type galaxies
Chies-Santos, A. L. · Larsen, S. S. · Wehner, E. M. · Kuntschner, H. · Strader, J. · Brodie, J. P. · Santos Jr, J. F. C.
Original · EN
Optical/near-infrared observations for 14 globular cluster (GC) systems in early- type galaxies are presented. We investigate the recent claims (Yoon, Yi & Lee 2006) of colour bimodality in GC systems being an artefact of the non linear colour - metallicity transformation driven by the horizontal branch morphology. Taking the advantage of the fact that the combination of optical and near-infrared colours can in principle break the age/metallicity degeneracy we also analyse age distributions in these systems.
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