Fig. 3
Left-side panel: Stokes V spectrum of HD 345439 in the vicinity of Hγ and He iλ4471 obtained from combining the first two subexposure pairs. The shape of the Zeeman features indicates a longitudinal magnetic field of positive polarity. Right-side panel: Stokes V spectrum of HD 345439 in the vicinity of Hβ and He iλ4922 lines obtained from combining the last two subexposure pairs. The shape of the Zeeman features indicates a longitudinal magnetic field of negative polarity.
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