Stacked Stokes I profiles (top panel) and 2D periodogram (bottom panel) of the 1083.3-nm He I IRT in the stellar rest frame for the 2021 spectra of TWA 7. The dashed horizontal line traces P_rot and the vertical dotted lines depict the velocities of the three components of the He I triplet. The color scale traces the logarithmic power in the periodogram. Only the main peaks (colored yellow to red and extending over at least several velocity bins) are likely to be significant.