We present a catalog of 4195 optically confirmed Sunyaev–Zel’dovich (SZ) selected galaxy clusters detected with signal-to-noise ratio >4 in 13,211 deg² of sky surveyed by the Atacama Cosmology Telescope (ACT). Cluster candidates were selected by applying a multifrequency matched filter to 98 and 150 GHz maps constructed from ACT observations obtained from 2008 to 2018 and confirmed using deep, wide-area optical surveys. The clusters span the redshift range 0.04 < z < 1.91 (median z = 0.52). The catalog contains 222 z > 1 clusters, and a total of 868 systems are new discoveries. Assuming an SZ signal versus mass-scaling relation calibrated from X-ray observations, the sample has a 90% completeness mass limit of M _500c > 3.8 10¹⁴ M _⊙, evaluated at z = 0.5, for clusters detected at signal-to-noise ratio >5 in maps filtered at an angular scale of 2.′4. The survey has a large overlap with deep optical weak-lensing surveys that are being used to calibrate the SZ signal mass-scaling relation, such as the Dark Energy Survey (4566 deg²), the Hyper Suprime-Cam Subaru Strategic Program (469 deg²), and the Kilo Degree Survey (825 deg²). We highlight some noteworthy objects in the sample, including potentially projected systems, clusters with strong lensing features, clusters with active central galaxies or star formation, and systems of multiple clusters that may be physically associated. The cluster catalog will be a useful resource for future cosmological analyses and studying the evolution of the intracluster medium and galaxies in massive clusters over the past 10 Gyr.

我们提供了由阿塔卡马宇宙望远镜（ACT）在13211 deg ²的天空中以信噪比> 4探测到的4195个经光学确认的Sunyaev–Zel'dovich（SZ）选定星系星团的目录。通过将多频匹配滤波器应用于从2008年至2018年获得的ACT观测数据构建的98 GHz和150 GHz频谱图，并使用深广域光学勘测进行确认，来选择候选聚类。聚类跨越红移范围0.04 < z <1.91（z值中位数= 0.52）。该目录包含222 z > 1个群集，总共868个系统是新发现的。假设通过X射线观察校正了SZ信号与质量标度的关系，则样品的质量极限为90％，M _500C > 3.8 10 ¹⁴ 中号 _⊙，在评价Ž = 0.5，为簇在的2.'4角规模过滤地图在信噪比> 5检测。该调查与用于校准SZ信号质量比例关系的深光学弱透镜调查有很大的重叠，例如暗能量调查（4566 deg ²），Hyper Suprime-Cam Subaru战略计划（469 deg）。²）和千度测量（825度²）。我们重点介绍了样本中的一些值得注意的物体，包括潜在的投影系统，具有强透镜特征的星团，具有活跃中央星系或恒星形成的星团以及可能物理相关的多个星团的系统。星团目录将为将来的宇宙学分析和研究过去10 Gyr内大星团中星群内介质和星系的演化提供有用的资源。