Extended Data Fig. 2: Measured velocity structure of HD 163296.
Top row, projected rotation velocity vϕ,proj; second row, the residual from the 10th-order polynomial fit to vϕ to highlight the small-scale structure; third row, the vR values; and fourth row, the deviation in the shifted and aligned line centre from the systemic velocity. Left and right columns show results using the parametric and non-parametric emission surface, respectively. Velocities in the lower three rows have been corrected for projection effects assuming i = 47.6°. Blue error bars show the inferred velocities assuming both vR and vϕ components, while red error bars assume vR = 0 m s−1.
