Resolution study showing the primary star mass (top), angular momentum (second panel), mass-specific angular momentum (third panel), and rotation period (bottom) as a function of R_sink. For each of the blue data points, the error bars are the minimum and maximum values measures between 1500 yr < t < 2500 yr, and the point is the average of these. The orange line shows the derived power-law relationships and the transparent region shows the spread in the fit. The derived fit and error are annotated in the top left of each panel. The grey points show the quantities of the R_sink = 1.2 AU simulation, which has not reached 1500 yr and is therefore excluded from the fitting (only upper or lower limits are indicated). The vertical dashed line marks R_sink = 2 R_⊙ ∼ 10⁻² AU, and the horizontal dashed line in the bottom panel shows the 2 day threshold that defines fast rotators (Kounkel et al. 2023).