论文标题
从黑暗能量调查的光度数据和不明智的光度数据中识别出的星系簇最多
Clusters of galaxies up to z=1.5 identified from photometric data of the Dark Energy Survey and unWISE
论文作者
论文摘要
使用黑暗能源调查和宽场红外调查探索器的光度数据，我们使用最近的邻居算法估算了1.05亿个星系的光度红移。从如此大的数据库中，基于给定的光度红移切片中星系总质量的过度密度，在红移范围内确定了151,244个星系簇，在0.1 <z <1.5的范围内，其中76,826个簇中有76,826个簇是新近识别的，并具有30,477个群集群。我们与从X射线调查中鉴定出的目录和Sunyaev-Zel'Dovich（SZ）效应的目录中的这些集群交叉匹配，由普朗克，南极望远镜和Atacama Cosmology望远镜进行调查，并获得45 X射线插图和56 SZ Clusters的红移。天空区域中超过95％的SZ群集在我们的目录中有对应物。我们在视线中发现了多个光学簇，约15％的SZ簇。
Using photometric data from the Dark Energy Survey and the Wide-field Infrared Survey Explorer, we estimate photometric redshifts for 105 million galaxies using the nearest-neighbour algorithm. From such a large data base, 151,244 clusters of galaxies are identified in the redshift range of 0.1<z<1.5 based on the overdensity of the total stellar mass of galaxies within a given photometric redshift slice, among which 76,826 clusters are newly identified and 30,477 clusters have a redshift z>1. We cross-match these clusters with those in the catalogues identified from the X-ray surveys and the Sunyaev--Zel'dovich (SZ) effect by the Planck, South Pole Telescope and Atacama Cosmology Telescope surveys, and get the redshifts for 45 X-ray clusters and 56 SZ clusters. More than 95 percent SZ clusters in the sky region have counterparts in our catalogue. We find multiple optical clusters in the line of sight towards about 15 percent of SZ clusters.
