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Fig. 5

image

Temperature gradient of the amorphous silicate (solid line) and the forsterite (dashed line) grains for the Whole model (see Sect. 4.1). Black lines give the temperature structure over the equator, while the grey gives it at the pole. The grey vertical dashed line indicates the transition between the low-density AGB wind and the superwind at the radius of RSW = 1944 AU.

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