Extended Data Fig. 4: As Fig. 3a, the half-power radius of R Doradus as a function of the position angle.
From: One month convection timescale on the surface of a giant evolved star
The curves indicate the half-power radius measured for the final epochs of the ALMA Band 7 (338 GHz) observations compared with the ALMA Band 6 (225 GHz) observations taken 15 days later. The red bar is the granule size derived from the higher resolution Band 7 observations. The improved signal-to-noise in Band 6 compensates for the lower flux and larger beam so that the typical 1σ s.d. radius uncertainty is also of order 0.2 mas.
