Table 1
PN and PO lines observed with the IRAM NOEMA interferometer in the D configuration.
| Line | Frequency (MHz) | Eu (K) | Sμ2(D2) | Synthetic Beam (″ × ″) | PA (°) | rms (mJy beam−1) |
|---|---|---|---|---|---|---|
| PN N = 2–1 J = 2–2 | 93978.206 | 6.8 | 1.3 | 4.47 × 3.58 | +88 | 0.84 |
| PN N = 2–1 J = 1–0 | 93978.474 | 6.8 | 1.7 | 4.47 × 3.58 | +88 | 0.84 |
| PN N = 2–1 J = 2–1 | 93979.770 | 6.8 | 15.1 | 4.47 × 3.58 | +88 | 0.84 |
| PN N = 2–1 J = 3–2 | 93979.890 | 6.8 | 7.0 | 4.47 × 3.58 | +88 | 0.84 |
| PN N = 2–1 J = 1–2 | 93980.756 | 6.8 | 0.1 | 4.47 × 3.58 | +88 | 0.84 |
| PN N = 2–1 J = 1–1 | 93982.320 | 6.8 | 1.3 | 4.47 × 3.58 | +88 | 0.84 |
| PO 2Π1/2 J = 5/2–3/2 e 3–2 | 108998.445 | 8.4 | 9.9 | 3.46 × 3.37 | +82 | 0.84 |
| PO 2Π1/2 J = 5/2–3/2 e 2–1 | 109045.040 | 8.4 | 6.6 | 3.46 × 3.37 | +82 | 0.84 |
| PO 2Π1/2 J = 5/2–3/2 f 3–2 | 109206.200 | 8.4 | 9.9 | 3.46 × 3.37 | +82 | 0.84 |
| PO 2Π1/2 J = 5/2–3/2 e 2–2 | 109271.376 | 8.4 | 0.7 | 3.46 × 3.37 | +82 | 0.84 |
| PO 2Π1/2 J = 5/2–3/2 f 2–1 | 109281.189 | 8.4 | 6.4 | 3.46 × 3.37 | +82 | 0.84 |
Notes. The bandwidth of the backend is 160 MHz, while the spectral resolution is 625 kHz. Frequencies and spectroscopic parameters for PN and PO were provided by Cazzoli et al. (2006) and Kawaguchi et al. (1983), respectively, and extracted from the Cologne Database for Molecular Spectroscopy1 (Müller et al. 2005).
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