Map of the HCN J = 1 → 0 moment 2 velocity dispersion, clipped at the 5σ level. Primary beam correction and Briggs weighting (robustness parameter +2.0) have been applied. The restored beam (2.′′ 52 × 2.′′ 17, PA = 78°) is shown in the lower left corner of the image. The cross indicates the λ ≈ 3 mm radio continuum peak, while the position of the secondary maximum in the south (also seen in Fig. 11) is inconspicuous in all other aspects.
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