Fig. 7
Examples of normalized radial profiles for sources BLAST063 (starless, top panels) and BLAST082 (proto-stellar, bottom panels). The points and error bars represent the ring-averaged integrated intensity in the molecular lines (from left to right) N2H+(1−0), HNC(1−0), HCO+(1−0) and HCN(1−0). The black solid line represents the fit obtained using Eq. (8). The red solid line shows the radial profile of the averaged BLAST intensity at 250 μm, and the green solid line represents the 3-mm beam profile of the Mopra telescope. Each pixel corresponds to 15 arcsec.
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