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Fig. 1


Velocity response functions RFυ in intergranules (IGRs) and granules (GRs) for Fe i 5434 (solid curves) and Fe i 5576 (dashed) calculated in NLTE from the IGR and GR models of Asplund et al. (2000) and taking the spectral response of the instrument and of the data acquisition and analysis into account.

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