H₂CO parameter maps of ISOSS J22478+6357 derived with XCLASS. The fit parameter maps (T_rot, N, Δv, v_off) for H₂CO are presented in color scale. The NOEMA 1.3 mm continuum data are shown in pink contours. The dotted pink contour marks the − 5σ_cont level. Solid pink contour levels are 5, 10, 20, 40, and 80σ_cont. All mm cores identified in Beuther et al. (2021) are labeled in pink. Positions with a peak in molecular emission, but no associated continuum (“molecular peaks”, MP) are indicated by orange circles (Sect. 4.2.1). The synthesized beam of the continuum data is shown in the bottom left corner. The synthesized beam of the spectral line data is similar. A linear spatial scale of 0.1 pc is indicated by a black scale bar.