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arXiv 1402.3769astro-ph.CO
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前线场中星系的光谱红移

Spectroscopic redshifts of galaxies within the Frontier Fields

H. Ebeling, C. -J. Ma, E. Barrett

摘要:

我们给出了在大质量星系团MACSJ 0416.1 - 2403($z=0.397$)、MACSJ 0717.5 +3745($z=0.546$)和MACSJ 1149.5 +2223($z=0.544$)场中测量的1921个光谱红移的星表,即,这是STScI选择的四个星团中的三个,作为通过引力透镜研究遥远宇宙的前沿领域(FF)倡议的目标。在MACS项目过程中汇编(大规模集群调查),检测FF集群,这个目录提供给社区有三个目的:(1)为了研究这些极端系统的星系群,可以识别星系团成员,(2)便于去除非透镜星系,从而减少弱透镜分析中的剪切稀释,(3)改进基于FF星系团地面和空间观测的测光红移定标。

英文摘要:

We present a catalog of 1921 spectroscopic redshifts measured in the fields of the massive galaxy clusters MACSJ0416.1--2403 ($z=0.397$), MACSJ0717.5+3745 ($z=0.546$), and MACSJ1149.5+2223 ($z=0.544$), i.e., three of the four clusters selected by STScI as the targets of the Frontier Fields (FF) initiative for studies of the distant Universe via gravitational lensing. Compiled in the course of the MACS project (Massive Cluster Survey) that detected the FF clusters, this catalog is provided to the community for three purposes: (1) to allow the identification of cluster members for studies of the galaxy population of these extreme systems, (2) to facilitate the removal of unlensed galaxies and thus reduce shear dilution in weak-lensing analyses, and (3) to improve the calibration of photometric redshifts based on both ground- and spacebased observations of the FF clusters.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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