Figure 10. The fractional mass contribution of mergers and accretion for galaxies at redshifts z = 0–3 when there is strong (dashed lines) and weak (dash– dotted) stellar feedback, and no AGN feedback (dotted lines). The reference model (solid lines) is also shown for comparison. We split the galaxies into three stellar mass bins. We only show points for which more than 10 galaxies contribute. Changes in the efficiency of star formation and the role of AGN make significant differences to the external stellar mass fraction.
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