Table 3
Non-detections in AB Aur disk.
| Species | Frequency | rms | δv | 3σ | N(50 K) | N(30 K) |
| (GHz) | (mK) | (km s-1) | (mK | cm-2 | cm-2 | |
| km s-1) | ||||||
|
|
||||||
| HNC | 90.664 | 4.20 | 0.65 | 20.32 | 2.0 × 1011 | 1.6 × 1011 |
| DCN* | 144.827 | 9.50 | 0.40 | 36.05 | 7.0 × 1010 | 6.0 × 1010 |
| 217.238 | 8.00 | 0.27 | 24.94 | 2.3 × 1010 | 2.5 × 1010 | |
| CCH | 87.316 | 6.20 | 0.67 | 30.45 | 1.9 × 1013 | 1.4 × 1013 |
| DCO+ | 144.077 | 9.20 | 0.40 | 34.91 | 6.0 × 1010 | 4.6 × 1010 |
| N2H+ | 93.171 | 6.50 | 0.63 | 30.96 | 8.0 × 1012 | 6.0 × 1012 |
| HC3N | 90.979 | 4.20 | 0.64 | 20.16 | 3.9 × 1011 | 2.9 × 1011 |
| 136.464 | 7.20 | 0.43 | 28.33 | 1.7 × 1011 | 2.4 × 1011 | |
| c-C3H2 | 217.822 | 8.00 | 0.27 | 24.94 | 1.0 × 1011 | 1.2 × 1011 |
| 251.311 | 7.20 | 0.23 | 20.72 | 8.8 × 1010 | 1.2 × 1011 | |
| p-H2S | 216.710 | 8.60 | 0.27 | 26.81 | 5.4 × 1012 | 2.7 × 1013 |
| o-H2S | 204.140 | 15.00 | 0.28 | 47.62 | 1.6 × 1016 | 5.2 × 1016 |
| HCS+ | 85.348 | 5.60 | 0.69 | 27.91 | 1.8 × 1012 | 1.2 × 1012 |
| 256.027 | 10.00 | 0.23 | 28.77 | 9.7 × 1010 | 1.1 × 1011 | |
| HCO⋄ | 255.341 | 10.00 | 0.23 | 28.77 | 1.0 × 1012 | 1.4 × 1012 |
| 265.348 | 16.00 | 0.22 | 45.03 | 3.2 × 1012 | 4.5 × 1012 | |
| SiO | 86.846 | 6.00 | 0.67 | 29.47 | 4.1 × 1011 | 3.2 × 1010 |
| 217.104 | 8.50 | 0.27 | 26.50 | 3.5 × 1010 | 4.9 × 1010 | |
| CH3OH | 252.485 | 11.00 | 0.23 | 31.65 | 2.4 × 1013 | 1.4 × 1014 |
Notes. The detection limit was calculated assuming a line width of Δv ∼ 4 km s-1. The upper limits on the column densities was calculated with MADEX for a source size of ∼14 arcsec (2000 AU at 145 pc), a H2 density of 3.5 × 106 cm-3 for two temperatures: 50 and 30 K.
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