Table 1
Model fitting results.
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) |
|---|---|---|---|---|---|---|---|---|
| Parameter | Rint | Rout | Hm0 | Zd | T0 | q | ∑0 | p |
| Molecule | (au) | (au) | (au) | (K) | cm−2 (%) | |||
| CO | 24 ± 1 | 296 ± 4 | 19.1 ± 0.1 | 0.71 ± 0.36 | 26.6 ± 0.1 | 0.28 ± 0.01 | 1.7 × 1017 (4) | 1.35 ± 0.03 |
| 13CO | 22 ± 1 | 252 ± 1 | 20.4 ± 0.3 | 0.56 ± 0.01 | 14.9 ± 0.6 | 0.00 ± 0.03 | 1.55 × 1015 (1) | 0.07 ± 0.07 |
| C18O | 25 ± 9 | 246 ± 2 | [19.5] | 0.46 ± 0.13 | [17.0] | [0.00] | 2.16 × 1014 (1) | 0.23 ± 0.03 |
| CN(3-2) | 44 ± 4 | 292 ± 1 | 19.3 ± 1.3 | 0.52 ± 0.01 | 18.6 ± 0.2 | 0.46 ± 0.01 | 1.12 × 1014 (1) | 1.30 ± 0.01 |
| CN(2-1) | 55 ± 1 | 292 ± 1 | 18.1 ± 0.1 | 0.59 ± 0.01 | 19.6 ± 4.8 | 0.31 ± 0.01 | 1.27 × 1014 (1) | 1.46 ± 0.01 |
| HCN | 34 ± 1 | 257 ± 2 | 21.1 ± 0.1 | 0.46 ± 0.01 | 17.3 ± 0.5 | −0.19 ± 0.02 | 1.29 × 1013 (1) | 2.73 ± 0.03 |
| CS | 34 ± 2 | 253 ± 1 | 18.1 ± 0.1 | 0.63 ± 0.01 | 20.7 ± 0.1 | −0.19 ± 0.12 | 5.3 × 1013 (1) | 3.21 ± 0.02 |
| 13CS | 46 ± 16 | 205 ± 17 | [18.7] | [0.64] | [20.9] | [−0.07] | 1.02 × 1012 (1) | [3.20] |
| DCN | [5] | 316 ± 10 | 17.0 ± 1.9 | [0.00] | [10.0] | [−0.19] | 1.58 × 1012 (1) | 2.08 ± 0.03 |
| N2D+ | 83 ± 6 | 243 ± 13 | [19.0] | [0.00] | [10.0] | [−0.06] | 8.9 × 1010 (33) | 1.31 ± 0.42 |
| o-H2CO | 106±2 | 282 ± 2 | [19.0] | [0.20] | 14.6 ± 0.2 | [0.00] | 1.44 × 1013 (1) | 1.05 ± 0.06 |
| p-H2CO | 134±1 | 305 ± 1 | [19.0] | [0.20] | 12.4 ± 0.3 | [0.00] | 7.5 × 1012 (2) | 1.45 ± 0.02 |
| c-C3H2 | 58 ± 1 | [300] | [19.0] | [0.00] | 23.8 ± 0.3 | 0.35 ± 0.05 | 2.28 × 1013 (1) | 2.77 ± 0.06 |
Notes. Parameters within brackets were fixed. The physical parameters T0, Hm, and Σ0 are referenced at r0 = 100 au. The scale height varies as r 1.25. For the surface density, Σ0, the error is quoted in percent. N2D+ and DCN column densities would be ~30% smaller assuming a temperature of 17 K. Zd mimics the molecular depletion near the mid-plane, with molecules being absent at altitude z < zd(r) = Zd Hm(r), where Hm(r) is the scale height of the molecule distribution (Col. 4; see also Fig. 4).
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