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Fig. 6


a)c) Fourier transforms (FT) of the HeI 4471 line broadened by differential rotation characterized by α = −0.5, 0.0 and +0.5, respectively, in an object of “pnrc” parameters Teff = 23 000 K and log g = 4.1 rotating at η = 0.8. d)f) Idem for the MgII 4481 line.

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