Distribution of FWHM versus centroid velocities for the narrow LVCs in our sample (black dots) and in S16 (blue triangle), compared with theoretical expectations from Ercolano & Owen (2016) for a star of M_* = 0.7M_⊙, L_X = 2× 10³⁰ erg/s, and L_acc = L_bol, varying the system inclination from i = 0° to i = 90° (thick red line). Purple diamonds represent systems observed at high inclinations, therefore there could be misclassification of the components in their [OI]λ6300 line profile due to projection effects.