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Fig. 4

image

Phase plot of the Bz values obtained for HD 46328 from the FORS1 (black asterisks; Hubrig et al. 2009) and FORS2 (red rhombs: Bonn pipeline, blue triangles: Potsdam pipeline; using the whole spectrum) data, and the sine wave function calculated using the magnetic field model given by Hubrig et al. (2011). A slight phase shift has been applied between our two sets of FORS2 measurements for visualisation purposes.

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