Table 4
Results of analysis.
| Source | Molecule | Σ | p | Rout | δV | Tk | q | αd | |
| (1012 cm-2 ) | (AU) | (km s-1) | (K) | ||||||
|
|
|||||||||
| MWC 480 | HCN 1–0 | 1.1 ± 0.4 | 2.4 ± 0.4 | [550] | 0.3 ± 0.2 | [30] | [0] | 0.0 ± 0.7 | |
| CN 2–1 (strong) | 11 ± 1 | 2.1 ± 0.1 | 540 ± 40 | 0.25 ± 0.04 | 33 ± 6 | [0] | 0.0 ± 0.3 | ||
| CN 2–1 (weak) | 11 ± 1.2 | 2.1 ± 0.15 | 550 ± 70 | 0.26 ± 0.07 | 33 ± 6 | [0] | – | ||
| CN 2–1 (all) | 10.4 ± 0.9 | 2.1 ± 0.1 | 545 ± 35 | 0.25 ± 0.04 | 30 ± 4 | [0] | – | ||
|
|
|||||||||
| LkCa 15 | HCN 1–0 | 10.6 ± 1.5 | 1.1 ± 0.2 | 600 ± 40 | 0.20 ± 0.03 | 7.0 ± 0.6 | 0.55 ± 0.25 | 0.0 ± 0.8 | |
| CN 2–1 (strong) | 38 ± 4 | 2.3 ± 0.2 | 570 ± 20 | 0.18 ± 0.02 | 10.8 ± 0.7 | 0.20 ± 0.07 | 0.15 ± 0.17 | ||
| CN 2–1 (weak) | 115 ± 18 | 0.2 ± 0.2 | 690 ± 20 | 0.26 ± 0.03 | 6.6 ± 0.3 | 0.80 ± 0.07 | – | ||
| CN 2–1 (all) | 58 ± 5 | 0.8 ± 0.1 | 630 ± 35 | 0.18 ± 0.01 | 8.8 ± 0.3 | 0.95 ± 0.05 | – | ||
|
|
|||||||||
| DM Tau | HCN 1–0 | 6.5 ± 0.9 | 1.0 ± 0.3 | 660 ± 20 | 0.18 ± 0.01 | 6.0 ± 0.4 | 0.00 ± 0.12 | 0.0 ± 0.5 | |
| CN 2–1 (strong) | 26 ± 4 | 2.1 ± 0.15 | 650 ± 20 | 0.16 ± 0.01 | 8.6 ± 0.5 | 0.05 ± 0.05 | 0.0 ± 0.3 | ||
| CN 2–1 (weak) | 46 ± 9 | 0.7 ± 0.15 | 550 ± 25 | 0.20 ± 0.01 | 6.5 ± 0.5 | 0.50 ± 0.08 | 0.0 ± 0.3 | ||
| CN 2–1 (all) | 35 ± 9 | 0.6 ± 0.06 | 620 ± 15 | 0.17 ± 0.01 | 7.5 ± 0.3 | 0.60 ± 0.05 | 0.0 ± 0.3 | ||
Notes. Column density Σ(r) = Σ × (r/R0) − p, external radius Rout, local line width δ V, temperature T(r) = T × (r/r0) − q and depletion scale height αd (see text). All values are referred to r0 = 300 AU. Square brackets indicate fixed parameters. The error bars are 1 σ uncertainties, and do not include uncertainties from calibration.
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