Fig. 11.

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Composite pressure support correction, αtot(R), for gas distributed in a composite disk+bulge system (with ndisk = 1, nbulge = 4), for a range of B/T (colors) and Re, bulge/Re, disk ratios (dash length). For the limiting cases, we recover the profiles shown in Fig. 9: B/T = 0 has αtot = α(n = 1) (black solid line), while B/T = 1 has αtot = α(n = 4) but with different radial scaling, owing to the different adopted Re, bulge/Re, disk ratios (colored lines). For the cases with 0 < B/T < 1, the bulge contribution modifies the α(n = 1) profile at both small and large radii, leading to larger αtot in inner regions and smaller αtot in the outskirts (R/Re, disk ≲ , ≳ 1 − 2). At fixed B/T, the deviation from the disk α(n = 1) in the center (R/Re, disk ≲ 1 − 2) is larger for smaller Re, bulge/Re, disk, while at large radii the deviation is larger for larger Re, bulge/Re, disk. For reference, we mark Re, bulge/Re, disk with vertical light grey lines, and also show αself − grav (grey dash-dotted line).
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