Table 2.
Observed lines of deuterated species and related species.
| Line | Rest freq. | Redshifted freq. (△) | μ(‡) | α(⋆) |
|---|---|---|---|---|
| (GHz) | (GHz) | (D) | (cm−2 km−1 s) | |
| Observed on 2019 April 11 | ||||
| HDO (JKa,Kc = 10, 1–00, 0) | 464.924520 | 246.537 | 1.73 | 1.9 × 1013 |
| o-NH2D (JKa,Kc = 11, 0–00, 0, F = 2–1) | 470.271911 (†) | 249.373 | 1.46 | 5.6 × 1013(♢), (°) |
| p-NH2 (NKa,Kc = 11, 0–10, 1, J = 1/2–1/2, F = 3/2–3/2) | 469.440621 (†) | 248.932 (†) | 1.82 | 1.8 × 1014(♢), (°) |
| p-NH2 (NKa,Kc = 11, 0–10, 1, J = 1/2–3/2, F = 3/2–5/2) | 470.409052 (†) | 249.445 (†) | 1.82 | 1.8 × 1014(♢), (°) |
| 7LiH (J = 1–0) | 443.952930 | 235.416 | 5.88 | 2.5 × 1011 |
| Observed on 2019 July 28 | ||||
| ND (N = 1–0, J = 2–1) | 522.077372 (†) | 276.844 (†) | 1.39 | 7.7 × 1013(♢) |
| ND (N = 1–0, J = 1–1) | 546.127619 (†) | 289.597 (†) | 1.39 | 7.7 × 1013(♢) |
 (JKa,Kc = 11, 0–10, 1) |
547.676440 | 290.418 | 1.85 | 6.3 × 1012(°) |
Notes. (△)For a redshift z = 0.88582, in heliocentric frame; (‡)electric dipole moment; (⋆)coefficients to convert line integrated opacity into column density Ncol = α ∫τdv, calculated in the case of pure radiative coupling with CMB photons, i.e., taking Tex = TCMB = 5.14 K; (†)frequency of the strongest hyperfine transition; (♢)for a hyperfine component with equivalent line strength Sul = 1; (°)the coefficient converts directly to the total (ortho+para) column density, assuming the OPR = 3. Spectroscopy parameters are taken from the Cologne Database for Molecular Spectroscopy (Müller et al. 2001, 2005; Endres et al. 2016) and the Jet Propulsion Laboratory Molecular Spectroscopy catalog (Pickett et al. 1998) and references therein.
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