LSD I profiles (left) and LSD Stokes V profiles (right) of V 2052 Oph observed with Narval. Top: the profiles themselves. The averaged I profile is also shown (dashed red) in the left panel. Bottom: a colourscale of the variation with phase. The phase is folded with HJD0 = 2 447 383.89 and Prot = 3.638833 d. For the LSD I profiles, the colourscale shows residual spectra compared to the averaged profile. The vertical dashed lines indicate ± v sin i. The zero velocity point corresponds to the laboratory wavelength reference while the profiles are centred on the stellar radial velocity value.
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