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Fig. 2

image

Spectra towards the three major cores from the broadband correlator unit data obtained from averaging the central 0.5′′ around the continuum emission peak. The spectral resolution in these bands is ~ 2.7 km s−1 or ~ 1.95 MHz. The molecule labels are given for the chemically rich core MMS1b. We note that the flux scale is smaller for MMS2a. Lines labeled with numbers are: (1) and (3) unidentified, (2) 33SO, (4) SO2, (5) 34SO2, (6) and (9) HNCO, (7) HCO and (8) CH2CO.

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