论文标题
带有VLT/Muse的星系群核心：RX J2129.4+0009，MS 0451.6-0305＆MACSJ21299.4-0741的新的强透镜分析
Galaxy cluster cores as seen with VLT/MUSE: new strong-lensing analyses of RX J2129.4+0009, MS 0451.6-0305 & MACSJ2129.4-0741
论文作者
论文摘要
我们提出了三个星系簇的强镜分析，RXJ2129.4+0009（Z = 0.235），MS0451.6-0305（Z = 0.55）和MACSJ2129.4-0741（Z = 0.589），使用Hubble Bleble Spacescope（HSSSCOPE）（HSSSSCOPE）（HSSSSCOPE）（HSST），探险家（缪斯）光谱。在RXJ2129中，我们新近光谱地确认了15个群集成员。我们最终的质量模型使用了8个多个图像系统，因为我们在集群的东北包括一个星系 - 盖镜头系统，并由71个光环组成，其中包括一个暗物质群尺寸的光晕和2个星系尺度的光环单独优化。对于MS0451，我们报告了北部地区2个新系统的光谱识别，以及112个集群成员。我们的质量模型使用16个多个图像系统和146个光晕，包括2个大规模光环和7个独立优化的Galaxy Scale Halos。对于MACSJ2129，我们报告了一个在z = 4.41时的一个新多个图像系统的光谱识别，以及针对4个群集成员的新测量光谱红移。我们的质量模型使用14个多个图像系统，并由151个光晕组成，包括独立优化的2个大型光环和4个Galaxy尺寸的光环。我们的最佳型号分别为RXJ2129，MS0451和MACSJ2129的图像平面中的RMS为0.29''，0.6''，0.74'。该分析与现有文献的详细比较显示了出色的协议，并讨论了镜头星系的具体研究，例如在MS0451中的Z = 2.9处的一组亚限体星系，而MACSJ2129中的亮度为Z = 2.1472红色单独成像的星系。
We present strong-lensing analyses of three galaxy clusters, RXJ2129.4+0009 (z=0.235), MS0451.6-0305 (z=0.55), and MACSJ2129.4-0741 (z=0.589), using the powerful combination of Hubble Space Telescope (HST) multi-band observations, and Multi-Unit Spectroscopic Explorer (MUSE) spectroscopy. In RXJ2129, we newly spectroscopically confirm 15 cluster members. Our resulting mass model uses 8 multiple image systems as we include a galaxy-galaxy lensing system North-East of the cluster, and is composed of 71 halos including one dark matter cluster-scale halo and 2 galaxy-scale halos optimized individually. For MS0451, we report the spectroscopic identification of 2 new systems of multiple images in the Northern region, and 112 cluster members. Our mass model uses 16 multiple image systems, and 146 halos, including 2 large-scale halos, and 7 galaxy-scale halos independently optimized. For MACSJ2129, we report the spectroscopic identification of one new multiple image system at z=4.41, and newly measure spectroscopic redshifts for 4 cluster members. Our mass model uses 14 multiple image systems, and is composed of 151 halos, including 2 large-scale halos and 4 galaxy-scale halos independently optimized. Our best models have rms of 0.29'', 0.6'', 0.74'' in the image plane for RXJ2129, MS0451, and MACSJ2129 respectively. This analysis presents a detailed comparison with the existing literature showing excellent agreements, and discuss specific studies of lensed galaxies, e.g. a group of submilimeter galaxies at z=2.9 in MS0451, and a bright z=2.1472 red singly imaged galaxy in MACSJ2129.
