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Fig. 6

image

Normalised spectra around the Rb I λ7947Å line of stars with strong (J15218+209, OT Ser, M1.5 V, top, black line) and faint magnetic field (J04376–110, BD-11 916, M1.5 V, bottom, black line), in comparison with the spectra of a CARMENES GTO, slowly rotating inactive star of the same spectral type (J16254+543, GJ 625, M1.5 V, red line) broadened to the corresponding target star v sin i.

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