NOEMA CO(1–0) moment maps derived within the SoFiA mask. From left to right, the panels show integrated intensity (m0), intensity-weighted velocity (m1), and velocity dispersion (m2). In the left panel, the black cross marks the adopted M33 center; the solid and dashed black lines show the projected disk major axis (position angle (PA) = 23^∘ east of north) and minor axis, respectively. The schematic axis of the proposed central stellar bar (PA ∼ 114^∘; A. Smercina et al. 2023) is approximately aligned in projection with M33’s disk minor axis (PA ∼ 113^∘). Blue contours in the left panel show the Nobeyama CO(1–0) integrated intensity at 3σ, 5σ, and 8σ, where σ = 0.74 K km s⁻¹; the Nobeyama resolution is 19﹩\mathop{.}\limits^{^{\prime\prime} }﹩3. The Spitzer 8 μm contours are the same as those in Figure 1. The black ellipse at the lower left shows the NOEMA synthesized beam. The dashed green ellipse outlines the SE filament analyzed in Sections 3.3 and 3.4.