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Table 3

Best-fit models and 1σ uncertainties of the non-LTE RADEX analysis of SO2 emission towards several SiO peaks.

Peak Coordinates Best-fit properties Tex (K)



RA Dec nH2 Tkin Ntot 165.144 165.225 163.605 143.057
Offset Offset (cm−3) (K) (cm−2) (GHz) (GHz) (GHz) (GHz)
SiO 2 (4A2 outflow: N) −0.1 7.5 2.5 ± 0.5 × 1014 26 204 33 11
                   
SiO 3 (4A2 outflow: N) 0.5 4.1 2.5 ± 1.0 × 1014 38 115 39
                   
SiO 4 (4A2 outflow, SW) −1.3 −1.8 1.5 ± 0.5 × 1014 24 −112 26 9
                   
SiO 5 (4A1 outflow, SE) 0.5 −3.2 2.5 ± 0.5 × 1014 38 115 39 14
                   
SiO 6 (4A2 outflow, SW) −2.9 −7.5 1.3 ± 0.5 × 1014 10 48 20

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