GGD 27-MM2 molecular line emission from N₂H⁺, CH₃CN, and H₂CO molecular lines. (a) Intensity map of the N₂H⁺. (b) Intensity map of the CH₃CN. (c) Velocity map of the N₂H⁺. (d) Velocity map of CH₃CN. (e) Velocity dispersion map of the N₂H⁺. (f) Velocity dispersion map of the CH₃CN. The H₂CO molecular line emission is depicted in all panels as white (panels a and b) and black (panels c–f) contours; the contours levels are the same as in Fig. 1. The gray contours are the intensity map of the emission of N₂H⁺ (panels cand e) and CH₃CN (panels d and f); the contours levels start from 5σ and are in steps of 5σ, 10σ, 15σ, and 20σ, where σ = 30.3 mJy beam⁻¹ km s⁻¹ for the N₂H⁺ emission, and start from 5σ with steps of 3σ, 6σ, 9σ, and 12σ, where σ = 6.8 mJy beam⁻¹ km s⁻¹, for the CH₃CN emission. The synthesized beams are shown in the lower-left corners. In panels a and b, a green star marks the position of the source MC taken from Qiu & Zhang (2009), and yellow crosses marks the positions of the continuum sources reported by Busquet et al. (2019). Blue diamonds in panel bindicate the positions where we have extracted the spectra of the CH₃CN.