CH₃OCH₃ intensity maps integrated in velocity between 5 and 12 km s^-1. The line frequency and the upper state energy are indicated on each plot. The CH₃OCH₃ 43.47 GHz map was obtained with the EVLA (Favre et al. 2011b). The dimethyl ether emission is stronger towards the compact ridge than the hot core SW position for low upper energy transitions, while the opposite is the case for high upper state energies.