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

被引：0
|
作者：
Chies-Santos, A. L. [1 ]
Larsen, S. S. [1 ]
Wehner, E. M. [1 ]
Kuntschner, H. [2 ]
Strader, J. [3 ]
Brodie, J. P. [4 ]
Santos, J. F. C., Jr. [5 ]
机构：
[1] Univ Utrecht, Sterrekundig Inst, Utrecht, Netherlands
[2] ST ECF ESO, Garching, Germany
[3] Harvard CfA, Cambridge, MA USA
[4] UCO Lick Observ, Santa Cruz, CA USA
[5] Univ Fed Minas Gerais, Belo Horizonte, MG, Brazil
来源：
STAR CLUSTERS: BASIC GALACTIC BUILDING BLOCKS THROUGHOUT TIME AND SPACE | 2010年 / 266期
关键词：
galaxies: star clusters; galaxies: elliptical and lenticular; cD; EXTRAGALACTIC GLOBULAR-CLUSTERS; POPULATION SYNTHESIS; STELLAR POPULATIONS; COLOR DISTRIBUTIONS; SYSTEMS; MODELS;
D O I：
10.1017/S1743921309991049
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Optical/near-infrared observations of 14 globular cluster (GC) systems in early-type galaxies are presented. We investigate the recent claims (Yoon et al. 2006) of colour bimodality in GC systems being an artefact of the nonlinear colour-metallicity transformation driven by horizontal-branch morphology. Taking 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.
引用
收藏
页码：184 / +
页数：2
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