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Fig. A.1.


IRAM spectra of 86 GHz SiO maser lines. Each panel shows at the bottom the spectrum obtained with the autocorrelator (1.1 km s−1), and at the top that obtained with the filter bank (3.5 km s−1, offset from zero). The line-of-sight velocity listed in Table D.1 is indicated with a small vertical bar at the top of each panel. The conversion factor between antenna temperatures and flux densities is 6.2 Jy K−1.

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