Comparison between observed equatorial velocity and the observed v sin i by Gaia. For the surface modulation stars (black dot symbols), the v sin i comes from Gaia’s vbroad parameter, and the v is calculated using the rotation frequency and stellar radius. For the g-mode pulsators (red circle symbols), the v sin i are measured by the FEROS spectra, and their v is calculated by the near-core rotation rate and stellar radius. The dotted lines mark the locations with various inclinations.