Detected spectra of HC₇N and NH₃ with transitions marked in the upper right of each panel. The NH₃ (4, 4) and (6, 6) lines have been smoothed to have a channel width of ~3.3 km s^-1, while the channel width of other lines is ~0.8 km s^-1. In the NH₃ (1, 1) panel, the positions of the satellites are indicated by red solid lines. The blue dashed line traces the systemic LSR velocity (−26.0 km s^-1) of IRC +10216.