Left: star formation rate versus total stellar mass for mergers and the control sample of relaxed non-merger galaxies. Right: star formation rate in mergers plotted against merger mass ratio. Mass ratios of 1:3 and 1:10 are indicated using the dotted horizontal lines. From left to right the solid vertical lines represent the star formation rates for LIRGs and ULIRGs. There is no significant trend between SFR and mass ratio. It is also important to note that minor mergers play a significant role in the formation of LIRGs. The left plot also shows a progressive one-sigma fit to the mergers (solid orange) and control sample (dashed red).