Figure 8. The fraction of galaxies as a function of the minimum external stellar mass contributed by major mergers (μ≥ 1/4, left-hand panel), minor mergers (1/4 > μ ≥ 1/10, middle panel) and accretion (μ < 1/10, right-hand panel) at redshift z = 0 (solid lines), 1 (dashed lines), and 2 ( dotted lines). The galaxies are split into three bins of stellar mass coded by colours. While accretion plays a larger role than mergers in terms of the external stellar mass contribution in low- and intermediate-mass galaxies, at low redshift, major mergers dominate the external mass contribution in the most massive galaxies.
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