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This article has an erratum: [https://doi.org/10.1051/0004-6361/201118473e]


Fig. 10

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SiO (2–1) and (5–4) spectra at B0i and B1a in a brightness-temperature scale. SiO (5–4) has been convolved to the angular resolution of the SiO (2–1) observations (i.e., 9.5 × 8.0 arcsec). The thick vertical line indicates the high-velocity ranges in which the analysis has been made, from –16.0 to –10.8 km s-1.

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