XMM-SERVS X-ray eXtended Galaxy Cluster catalog

We carried out a visual inspection of the optical image, and spatial distribution of galaxies within the same redshift layer to confirm the existence of clusters and estimated the cluster redshift with the spectroscopic and photometric redshifts of galaxies. The growth curve analysis was used to characterize the detections. We present a catalog of extended X-ray galaxy clusters detected from the XMM-SERVS data.

The XMM-SERVS X-ray eXtended Galaxy Cluster (XVXGC) catalog features 141 cluster candidates. Specifically, there are 53 clusters previously identified as clusters with intracluster medium (ICM) emission (class 3); 40 that were previously known as optical or infrared (IR) clusters, but detected as X-ray clusters for the first time (class 2); and 48 identified as clusters for the first time (class 1). Compared with the class 3 sample, the "class 1 + class 2" sample is systematically fainter and exhibits a flatter surface brightness profile.

Specifically, the median flux in [0.5-2.0]keV band for `class 1 + class 2" and class 3 sample is 1.288*10^-14^erg/s/cm^2^ and 1.887*10^-14^erg/s/cm^2^, respectively. The median values of beta (i.e., the slope of the cluster surface brightness profile) are 0.506 and 0.573 for the "class 1 + class 2" and class 3 samples, respectively.