Fast and slow rotators in the densest environments: a FLAMES/GIRAFFE integral field spectroscopy study of galaxies in A1689 at z = 0.183

Fast and slow rotators in the densest environments: a FLAMES/GIRAFFE integral field spectroscopy study of galaxies in A1689 at z = 0.183
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最密集环境中的快速和慢速旋转体:对 A1689 中 z = 0.183 处星系的 FLAMES/GIRAFFE 积分场光谱研究

DOI:
10.1093/mnras/sts406
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发表时间:
2013
影响因子:
4.8
通讯作者:
D'Eugenio F
D'Eugenio F
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
D'Eugenio F

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我们展示了大质量星团 Abell 1689 中 z = 0.183 处 30 个星系的 FLAMES/GIRAFFE 积分场光谱。通过进行类似于 ATLAS3D 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 个慢速旋转体,其星等分布与处女座星团中的分布相似。我们的 Abell 1689 样本的总体慢旋转分数为 0.15 ± 0.03,与使用我们的选择标准的处女座相同。这表明星团中慢速旋转体的比例并不强烈依赖于其密度。然而,在阿贝尔 1689 内,我们发现慢速旋转星团的比例向中心增加,正如在处女座星团中也发现的那样。
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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