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Fig. 2

image

Time-evolution of the radiation pressure factor β for grains of four different radii. The red, vertical, dashed lines are the same as those in Fig. 1. Although not discernable on the plot, the Tip of the AGB does not coincide exactly with the peak of β because at that time the stellar mass is still decreasing. However, the time between both peaks is just about 1600 yr.

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