Spectroscopic redshift information of the two clusters. Left: Spatial distribution of the Gemini-studied galaxies with spectroscopic z. The color bar represents the z value of each galaxy. The light green and purple circles represent the 1′ area around the eastern and western clusters (X-ray peaks), respectively, and display the regions within which galaxies are assumed to belong to the respective cluster. Galaxies with bright yellow or deep blue colors do not belong to the cluster system. Middle: Spectroscopic galaxy z histogram for the eastern cluster. The black line represents the X-ray z normalized likelihood. Right: Same as in middle panel but for the western cluster.