Size-linewidth relation (σ_v versus R) for cores in different feedback bins. Top left: Distribution in the four global feedback bins. Top right: distributions in the outflow bins. Lower left and lower right: wind and supernova bins, respectively. The dashed lines represent Larson’s first relation (slope of 0.5; Larson 1981; Solomon & Wickramasinghe 1969) for different surface mass densities (units of M_⊙ pc⁻²) for virialised structures (α_vir = 1). The different colours represent the distribution of cores in the various feedback bins, as noted in the legend.