Table 3
GBT observations: line intensities and spectral characteristics.
| UT date (yyyy/mm/dd) | Δ (au) | rh (au) | Line | RMS(1) (mK channel−1 ) | Area ( )(2) (K km s−1) |
Width(3) (km s−1) | Δυ(3) (km s−1) |  (km s−1) |
|---|---|---|---|---|---|---|---|---|
| 2020/07/24.71 | 0.696 | 0.667 | OH 1 665 | 12 | 0.428 ± 0.014 | 2.89 ± 0.11 | −0.07 ± 0.05 | 2.32 ± 0.07 |
| 2020/08/11.88 | 1.078 | 1.053 | OH 1 665 | 9 | < 0.03 | – | – | – |
| 2020/07/24.71 | 0.696 | 0.667 | OH 1 667 | 10 | 0.827 ± 0.012 | 2.95 ± 0.05 | −0.05 ± 0.02 | 2.43 ± 0.04 |
| 2020/08/11.88 | 1.078 | 1.053 | OH 1 667 | 9 | −0.017 ± 0.005 | 0.67 ± 0.27 | −0.53 ± 0.12 | – |
| 2020/07/24.81 | 0.696 | 0.669 | NH3 (11 − 11) | 48 | < 0.017 | – | – | – |
| 2020/07/24.81 | 0.696 | 0.669 | NH3 (22 − 22) | 47 | < 0.016 | – | – | – |
| 2020/07/24.81 | 0.696 | 0.669 | NH3 (33 − 33) | 47 | < 0.016 | – | – | – |
| 2020/07/24.81 | 0.696 | 0.669 | NH3 (44 − 44) | 46 | < 0.016 | – | – | – |
| 2020/07/24.81 | 0.696 | 0.669 | NH3 (55 − 55) | 46 | < 0.016 | – | – | – |
Notes. (1)For a spectral channel width of ~0.005 km s−1 for the NH3 lines and ~0.3 km s−1 for the OH 1665 and 1667 MHz lines. (2)Velocity-integrated flux density (i.e., line area) in the 
scale or a 3σ upper limit. Considered velocity intervals are [−2.5, +2.5] km s−1 and [−1.5,1.5] km s−1 for the OH and NH3 lines, respectively. For the OH 1667 MHz line observed on 11.88 August 2020, the line area is that obtained from a Gaussian fit.(3) Velocity offset from a Gaussian fit. (4)Half lower bases of the fitted trapezia (Fig. 2).
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