Derived nonthermal linewidth dV0 at Rv = 300 AU as a function of assumed kinetic temperature profile. T0 is the temperature at Rt = 300 AU. The 4 curves correspond to different exponents q = 0 (red), 0.2 (green), 0.4 (blue), and 0.6 (cyan). Errorbars are ± 1σ.
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