Open Access
Table 1
Basic observational parameters at the observed frequencies.
| Lines | Rest frequency (GHz) |
Tsys (K) | ηmb | HPBW (′′) |
Channel spacing (kms−1) |
|---|---|---|---|---|---|
| 12 CO(1−0) | 115.271 | 250−300 | 0.52 | 49 | 0.159 |
| 13 CO(1−0) | 110.201 | 150−200 | 0.56 | 51 | 0.166 |
| C18 O(1−0) | 109.782 | 150−200 | 0.56 | 52 | 0.166 |
| HCO+ (1−0) | 89.188 | 100−150 | 0.60 | 61 | 0.187 |
| NH3 (1,1) | 23.694 | ∼50 | 0.59 | 115 | 0.11 |
| NH3 (2,2) | 23.723 | ∼50 | 0.59 | 115 | 0.11 |
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