Channel maps between 9.081 and 11.347 km s⁻¹ for the NOEMA and 30 m HC₃N (10 − 9) spectral cube, in 0.206 km s⁻¹ steps. The white dashed contours outline the NH₃ filaments defined in P15. The white star represents the location of the protostar, which has a systemic velocity v_LSR = 10.2 km s⁻¹ (P15). The white ellipse at the bottom left corner represents the size of the beam. The white line in the top left channel map is a scalebar representing a length of 5000 au.