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Fig. 5
Polarised spectra of WD 2138−332 obtained with the FORS2 instrument at two different epochs. The upper spectrum, obtained with grism 1200B, was already published by Bagnulo & Landstreet (2018) and is reproduced here (with a revised ⟨Bz ⟩ measurement) for comparison with the new FORS2 observations obtained in 2018.
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