A catalog of galaxy clusters identified from SCUSS, SDSS, and unWISE

TL;DR

This paper catalogs over 19,600 galaxy clusters from combined SCUSS, SDSS, and unWISE data using a fast clustering algorithm, providing a valuable resource for cosmological studies.

Contribution

It introduces a new catalog of galaxy clusters identified from multiple surveys with improved detection and characterization methods.

Findings

Total of 19,610 clusters identified

False detection rate approximately 8.9%

Redshift uncertainty around 0.013

Abstract

This paper presents the identification of galaxy clusters from the photometric redshift catalog based on three imaging surveys of SCUSS, SDSS, and unWISE. By applying a fast clustering algorithm, we obtain a total of 19,610 clusters in the redshift range of $0.05 < z < 0.65$ over a sky area of about 3,700 deg$^2$ in the south Galactic gap. Monte Carlo simulations show that the false detection rate is about 8.9\%. The redshift uncertainty is estimated to be about 0.013. The mass and richness of detected clusters are derived through the calibration based on the measurements of X-ray emission and Sunyaev--Zel'dovich effect.