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Fig. 16


a) Tested truncated rotation-expansion broadening functions (REBF) for several velocity ratios . b) Loci of points with the same projected velocity in the interval of Doppler displacements that contribute to the broadening of line profiles when vexp = 0.24. c) He i 4471 line profiles broadened for several input rotation velocities Vrotsini and velocity ratio Vexp/Vrot = 1.0. d) FT of the REBF. e) Resulting Vsiniexp + rot parameters produced in the frame of an expanding and rotating atmosphere against the model input Vrotsini for several ratios vexp.

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