A 3D view of the Hydra I cluster core- II. Stellar populations

被引：0
|
作者：
Barbosa, Carlos Eduardo [1 ,2 ]
Arnaboldi, Magda [1 ]
Hilker, Michael [1 ]
Coccato, Lodovico [1 ]
Richtler, Tom [3 ]
de Oliveira, Claudia Mendes [2 ]
机构：
[1] European Southern Observ, Garching, Germany
[2] IAG USP, Sao Paulo, SP, Brazil
[3] Univ Concepcion, Concepcion, Chile
来源：
GALAXIES IN 3D ACROSS THE UNIVERSE | 2014年 / 10卷 / 309期
基金：
巴西圣保罗研究基金会;
关键词：
galaxies: elliptical and lenticular; cD; galaxies: clusters: individual (Hydra I); galaxies: stellar content;
D O I：
10.1017/S1743921314009727
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Several observations of the central region of the Hydra I galaxy cluster point to a multi-epoch assembly history. Using our novel FORS2/VLT spectroscopic data set, we were able to map the luminosity-weighted age, [Fe/H] and [alpha/Fe] distributions for the stellar populations around the cD galaxy NGC 3311. Our results indicate that the stellar populations follow the trends of the photometric substructures, with distinct properties that may aid to constrain the evolutionary scenarios for the formation of the cluster core.
引用
收藏
页码：223 / 224
页数：2
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