Fig. 12
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CC functions (normalised to unity) for Stokes-I spectra of four sample M stars using the mask from the zero-field NiH laboratory work of Vallon et al. (2009) and Havalyova et al. (2021). The S/N is poor, but the RVs of the strongest peaks match values derived from atomic data. NiH is not detected in GJ 388, one of the warmest stars in our sample.
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