First MATISSE <i>L</i>-band observations of HD 179218
First MATISSE <i>L</i>-band observations of HD 179218
Context. Carbon is one of the most abundant components in the Universe. While silicates have been the main focus of solid phase studies in protoplanetary discs (PPDs), little is known about the solid carbon content especially in the planet-forming regions (~0.1–10 au). Fortunately, several refractory carbonaceous species present C-H bonds …