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Table 1
Observed transitions.
| Transition | Frequency | Eupper | Aul | |
| (MHz) | (K) | (s-1) | ||
|
|
||||
| GBT 100-m | ||||
| pNH3 |
|
23 694.4955 | 24.4 | 1.68 × 10-7 |
| pNH3 |
|
23 722.6336 | 65.6 | 2.24 × 10-7 |
| oNH3 |
|
23 870.1296 | 124.7 | 2.57 × 10-7 |
| APEX 12-m | ||||
| oNH2D |
|
332 781.890 | 16.6 | 8.14 × 10-6 |
| pNH2D |
|
332 822.510 | 16.0 | 7.60 × 10-6 |
| oNHD2 |
|
335 513.793 | 16.1 | 1.29 × 10-5 |
| pNHD2 |
|
335 446.321 | 16.3 | 1.47 × 10-5 |
| mND3 |
|
309 909.490 | 14.9 | 2.59 × 10-4 |
| pND3 |
|
306 736.710 | 14.8 | 2.51 × 10-4 |
| N2D+ | (4−3) | 308 422.267 | 37.0 | 1.75 × 10-3 |
| N2D+ | (6−5) | 462 603.852 | 77.7 | 6.15 × 10-3 |
| N2H+ | (5−4) | 465 824.777 | 67.1 | 6.18 × 10-3 |
| IRAM 30-m | ||||
| oNH2D |
|
85 926.278 | 20.7 | 7.84 × 10-6 |
| pNH2D |
|
110 153.594 | 21.3 | 1.65 × 10-5 |
| N2D+ | (2−1) | 154 217.011 | 11.1 | 1.97 × 10-4 |
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