密地环境中的快旋子和慢旋子：z=0.183时Abell 1689星系的FLAMES/GIRAFFE IFS研究
Fast and slow rotators in the densest environments: a FLAMES/GIRAFFE IFS study of galaxies in Abell 1689 at z=0.183
摘要：
我们提出的火焰/GIRAFFE积分场光谱中的30个星系的大质量星系团Abell 1689在z = 0.183。进行类似于ATLAS 3D的分析，我们将运动学形态-密度关系的基线扩展了投影密度的一个数量级，并表明可以使用现有仪器来识别本地宇宙之外的慢速和快速旋转体。我们发现4.5 +- 1.0慢旋转的大小分布类似于那些在室女星系团。我们的Abell 1689样本的整体慢旋转分数为0.15 ± 0.03，与使用我们的选择标准的室女座相同。这表明在星系团中慢旋子的比例并不强烈地依赖于它的密度。然而，在Abell 1689中，我们发现慢旋子的比例向中心增加，在室女星系团中也发现了这一点。
英文摘要：
We present FLAMES/GIRAFFE integral field spectroscopy of 30 galaxies in the massive cluster Abell 1689 at z = 0.183. Conducting an analysis similar to that of ATLAS3D, we extend the baseline of the kinematic morphology-density relation by an order of magnitude in projected density and show that it is possible to use existing instruments to identify slow and fast rotators beyond the local Universe. We find 4.5 +- 1.0 slow rotators with a distribution in magnitude similar to those in the Virgo cluster. The overall slow rotator fraction of our Abell 1689 sample is 0.15 +- 0.03, the same as in Virgo using our selection criteria. This suggests that the fraction of slow rotators in a cluster is not strongly dependent on its density. However, within Abell 1689, we find that the fraction of slow rotators increases towards the centre, as was also found in the Virgo cluster.
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