Fig. 11
Top: velocity profile for the best-fit model for IRAS4A (red), and those with the infall stopped inside 700 (blue), 1000 (cyan), 3000 (magenta) and 10 000 AU (green). Outside the stop radius the infall profile is the same as in the best-fit model. Bottom: comparison of resulting line profiles for these different velocity profiles. The green error bar and scaling factors are the same as in Fig. 6.
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