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Table 3

Parameters estimated from rotational and population diagrams methods (column densities, excitation temperatures, and emission extents) based on HIFI and JCMT data.

Molecule V FWHM Rotational Population τ Eup range No of trans.
[km s-1] [km s-1] Ncol[cm-2] Tex[K] Ncol[cm-2] Tex[K] size[′′] [K]
CO −4.8± 0.3 5.1±0.9 6.0 × 1016 162 1.2 × 1019 62 17 0.1–144 33–752 12
−7.2± 2.3 15.4±1.8 6.0 × 1016 89 8.0 × 1018 42 17 0.01–34 33–752 12
HCO+ −5.6± 0.2 3.4±0.4 2.3 × 1013 35 1.0 × 1014 43 11 0.08–2.02 43–283 7
−6.8± 0.6 7.3±2.0 2.2 × 1013 23 2.0 × 1015 19 9.7 0.7–35 43–154 4
HCN −5.3± 0.2 4.2±0.7 4.5 × 1013 31 1.1 × 1015 35 7.7 0.2–4.4 43–234 6
HNCa −5.4±0.1 3.8±0.5 4.8 × 1012 43 44–122 3
CCH −6.3± 0.5 3.7±0.5 2.2 × 1014 22 1.1 × 1016 25 5.3 0.3–7.1 42–151 4
CNa −5.6± 0.2 3.2±0.5 9.7 × 1013 22 1.3 × 1014 26 23 0.01–0.18 33–114 3
CS −5.5± 0.4 3.9±0.5 7.4 × 1013 26 4.9 × 1013 61 14 0.01–0.09 66–282 7
H2S −5.7± 0.7 3.4±0.8 1.1 × 1013 56 4.9 × 1014 26 8.9 0.01–5.6 55–350 5
NH3 −5.1± 0.6 4.1±1.0 2.8 × 1013 67 4.8 × 1013 28 9.6 0.1–1.6 28–170 5
N2H+a −5.9± 0.2 2.8±0.3 5.6 × 1011 19 45–125 3
NOa −4.8± 0.5 5.8±2.8 7.2 × 1015 25 1.7× 1016 54 12 0.015–0.021 36–115 2
CH3OH −5.7± 0.5 3.3±0.6 1.8 × 1014 209 1.5 × 1017 108 1.5 0.6–10.4 25–352 49
H2CO −5.4± 0.3 3.6±0.7 2.0 × 1013 34 9.9 × 1013 41 7.3 0.02–0.61 32–263 14
SO −5.5± 0.4 4.9±0.7 1.5 × 1014 53 1.9 × 1016 64 2.7 0.1–6.1 26–405 22
SO2 −5.1± 0.4 4.6±0.9 3.0 × 1014 92 5.4 × 1017 175 0.9 0.5–8.9 31-354 47
H2O −4.8± 0.9 3.1±0.6 3.5 × 1013 63 2.4 × 1015 38 9.1 0.4–104 53–305 8
−6.0± 0.2 12.1±2.3 5.5 × 1013 43 1.0 × 1016 31 4.9 0.2–5.7 101–305 6

Notes. The second column shows the values of the central velocity of the observed lines. When there are two values, the first corresponds to the envelope component, the second to the outflow. The last 3 columns show first the range of optical depth τ for observed lines, then the Eup range, which is covered by observed features, and finally the number of lines from different energy levels used for the analysis; i.e., we observed 4 lines of NO, but they originate only from 2 different energy levels. Population diagram method was used when at least 4 lines of a given molecule were observed, which is why there are no values for HNC and N2H+.

(a)

Indicates higher uncertainty of measurements because e.g. only 3 different levels were observed.

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