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arXiv · 0910.0127

An optical/near-infrared survey of GCs in early-type galaxies

A. L. Chies-Santos·S. S. Larsen·E. M. Wehner·H. Kuntschner·J. Strader·J. P. Brodie·J. F. C. Santos Jr
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Abstract

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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A. L. Chies-Santos, S. S. Larsen, E. M. Wehner, H. Kuntschner, J. Strader, J. P. Brodie, J. F. C. Santos Jr. 2009-10-01. An optical/near-infrared survey of GCs in early-type galaxies. https://doi.org/10.1017/s1743921309991049

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