Fig. 2
Example of the four Stokes parameter LSD profiles derived for HR 5624 using a complete metal line mask. The top panels compare the Stokes I and V HARPSpol profiles (solid lines) with the ESPaDOnS LSD profiles (dashed lines) obtained at close rotational phases. The bottom panels show examples of some of the strongest Stokes Q and U HARPSpol LSD profiles.
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