Table 1
Summary of line observations.
| Line | Transition | ν | log10 Aij | Eup | Beamsize |
|---|---|---|---|---|---|
| (GHz) | (s−1) | (K) | arcsec (′′) | ||
| Band 3 | |||||
| HNC | 1–0 | 90.66356 | –4.57 | 4.4 | 0.95 × 0.7 |
| HCN | 1–0 | 88.63160 | –4.62 | 4.3 | 1.34 × 0.94 |
| HC3N | 10–9 | 90.97902 | –4.23 | 24.0 | 0.95 × 0.7 |
| HC5N | 34–33 | 90.52589 | –4.10 | 76.0 | 0.95 × 0.7 |
| HC5N | 35–34 | 93.18812 | –4.10 | 80.5 | 0.95 × 0.7 |
| N2H+ | 1–0 F1 = 1–1 | 93.17188 | –4.41 | 4.5 | 0.95 × 0.7 |
| 1–0 F1 = 2–1 | 93.17370 | –4.41 | 4.5 | 0.95 × 0.7 | |
| 1–0 F1 = 0–1 | 93.17613 | –4.41 | 4.5 | 0.95 × 0.7 | |
| SiO | 2–1 | 86.84696 | –4.53 | 6.3 | 1.35 × 0.97 |
| H13CO+ | 1–0 | 86.75429 | –4.4 | 4.2 | 0.95 × 0.7 |
| Band 7: PILS | |||||
| HNC | 4–3 | 362.63030 | –2.64 | 43.5 | 0.5 |
| HCN | 4–3 | 354.50548 | –2.69 | 42.5 | 0.5 |
| HC3N | 37–36 | 336.52008 | –2.52 | 306 | 0.5 |
| 38–37 | 345.60901 | –2.48 | 323 | 0.5 | |
| 39–38 | 354.69746 | –2.45 | 340 | 0.5 | |
| H13CO+ | 4–3 | 346.99835 | –2.48 | 41.6 | 0.5 |
Notes. All rest frequencies were taken from the Cologne Database for Molecular Spectroscopy (CDMS) (Endres et al. 2016) and the Jet Propulsion Laboratory (JPL) molecular spectroscopy catalog (Pickett et al. 1998). The data for HNC are based on Creswell et al. (1976) and Thorwirth et al. (2000). The entry for HCN is based on Delucia & Gordy (1969) and de Lucia & Helminger (1977). The N2H+ entries are based on Cazzoli et al. (2012).
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