This article has an erratum: [https://doi.org/10.1051/0004-6361/201935428e]
Deconvolved size of spectral line emission as a function of frequency for L1448-2A. For each spectral line, the blue and green symbols represent the major and minor axes with their associated uncertainties, respectively, and the red cross is their geometrical mean. The molecule(s) assigned to each detected line is (are) indicated at the top of each panel. A question mark indicates either that the line is unidentified or that less than ~70% of the measured peak flux density is accounted for by our model. The synthesized beam size (HPBW) is shown to the right of each panel. The dashed line shows the size assumed for the spectral line modeling in Sect. 3.6 and reported in Table 4.
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