A KiDS weak lensing analysis of assembly bias in GAMA galaxy groups
A KiDS weak lensing analysis of assembly bias in GAMA galaxy groups
We investigate possible signatures of halo assembly bias for spectroscopically selected galaxy groups from the Galaxy And Mass Assembly (GAMA) survey using weak lensing measurements from the spatially overlapping regions of the deeper, high-imaging-quality photometric Kilo-Degree Survey. We use GAMA groups with an apparent richness larger than 4 to identify …