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Table A.2.

Gaussian fitting parameters and fluxes of the water isotopolog lines.

Molecule Rest frequency [MHz] vLSR [km s−1] Peak intensity [K] FWHM [km s−1] Flux [K.km s−1]
North source position (N)

HDO 225 896.72 9.11 ± 0.06 5.22 ± 0.19 2.78 ± 0.15 15.46 ± 1.41
5.71 ± 0.09 2.90 ± 0.23 1.96 ± 0.28 6.06 ± 1.34
203 407.52 9.71 ± 0.15 1.61 ± 0.21 2.25 ± 0.38 3.85 ± 1.16
5.44 ± 0.14 2.22 ± 0.21 2.71 ± 0.48 6.39 ± 1.73

Middle position (M)

HDO 225 896.72 5.73 ± 0.10 3.20 ± 0.25 2.01 ± 0.26 6.87 ± 1.43
9.15 ± 0.09 4.06 ± 0.21 2.89 ± 0.23 12.48 ± 1.67
203 407.52 5.46 ± 0.09 2.06 ± 0.17 2.31 ± 0.26 5.07 ± 0.98
9.54 ± 0.16 1.18 ± 0.17 2.29 ± 0.43 2.87 ± 0.96

N and M positions(a)

HDO 143 727.21 1.07 ± 0.30

Notes. (a) The two components at 6 and 9 km s−1 cannot be distinguished because of the poor spectral resolution of the data (1.95 MHz). The total integrated flux is consequently only given for this transition. A similar flux is obtained for the N and M positions because of the low spatial resolution of the data (2.5″ × 2.1″).

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