J/ApJ/829/44 NGVS. XX. RedGOLD background galaxy clusters (Licitra+, 2016) ================================================================================ The Next Generation Virgo Cluster Survey. XX. RedGOLD background galaxy cluster detections. Licitra R., Mei S., Raichoor A., Erben T., Hildebrandt H., Munoz R.P., Van Waerbeke L., Cote P., Cuillandre J.-C., Duc P.-A., Ferrarese L., Gwyn S.D.J., Huertas-Company M., Lancon A., Parroni C., Puzia T.H. =2016ApJ...829...44L (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Clusters, galaxy ; Redshifts ; Photometry Keywords: galaxies: clusters: general; galaxies: general; galaxies: high-redshift Abstract: We build a background cluster candidate catalog from the Next Generation Virgo Cluster Survey (NGVS) using our detection algorithm RedGOLD. The NGVS covers 104deg^2^ of the Virgo cluster in the u^*^,g,r,i,z-bandpasses to a depth of g~25.7mag (5{sigma}). Part of the survey was not covered or has shallow observations in the r band. We build two cluster catalogs: one using all bandpasses, for the fields with deep r-band observations (~20deg^2^), and the other using four bandpasses (u^*^,g,i,z) for the entire NGVS area. Based on our previous Canada-France-Hawaii Telescope Legacy Survey W1 studies, we estimate that both of our catalogs are ~100% (~70%) complete and ~80% pure, at z<=0.6 (z<~1), for galaxy clusters with masses of M>~10^14^M_{sun}_. We show that when using four bandpasses, though the photometric redshift accuracy is lower, RedGOLD detects massive galaxy clusters up to z~1 with completeness and purity similar to the five-band case. This is achieved when taking into account the bias in the richness estimation, which is ~40% lower at 0.5<=z<0.6 and ~20% higher at 0.61.4x10^14^M_{sun}_ and 0.08