“Mass balance” analysis. Comparison of the measured mass to the maximum supported mass by different forces. Cores are ordered according to their location in the central massive structure, in the filament, or isolated. Black: measured mass from continuum maps. Gray: mass of the star embedded in the MM1 clump. Red: mass supported by magnetic fields assuming a uniform value across the source. Light and dark blue: mass supported by virialized gas motions due to internal dynamics and thermal dispersion, respectively.