Comparisons of the Hα line core width (a,d) and ALMA at 3.0 mm brightness temperature maps (b,e) at original (top row) and degraded (bottom row) resolution. The black and red boxes on these maps denote the chosen EN and QS regions, respectively. The last column is a correlation contour plot between the Hα linewidth and ALMA brightness temperature at 3.0 mm, with contours with linear fits (dashed lines) and means (circles) of the three cases: the whole simulation box in red, the QS box in green, and the EN region box in blue. The red and green star data points are for the FAL C and VAL C 1D semi-empirical models and the black circle with error bars is an observational data point for the G2V type star α Cen A with a linewidth of 0.62 Å.