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Fig. C.1

image

Series of model profiles of the 30α line for different values of the Lorentzian width Γ and turbulent widths that give Δυ = 8.5 km s−1 in the 26α line. The fitted Gaussian widths are indicated: they exceed the observed width when Γ > 1.7 MHz. The deviation from a single Gaussian is shown for the nominal case as a dashed green curve.

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