Moment 1 velocity field of CS J = 2 → 1, clipped at the 5σ level. Contours are 440, 520, 600, and 680 km s⁻¹ from lower right to upper left. Primary beam correction and Briggs weighting (robustness parameter +2.0) have been applied. Therestored beam (2.′′22 × 1.′′ 99, PA = 78°) is shown in the lower left corner of the image. The cross indicates the λ ≈ 3 mm radio continuum peak.