Top: computed RV curves of the Aa and Ab components (solid and dashed curves, respectively) overplotted with RVs for the Aa and Ab components measured by Shultz et al. (filled red squares and blue circles, respectively) and RVs measured from the Brγ signature in GRAVITY data (empty red squares and blue circles, respectively; see Sect. 4). The latter RVs were not used for the orbital solution and are shown only for comparison. Bottom: residuals in units of σ.