Table 2
Catalog of the observed molecular lines with IRAM and APEX.
| Mol. | Trans. | Eu ∕kB | ncrit | Freq. | Telescope | Beam size | Efficiency |
|---|---|---|---|---|---|---|---|
| (K) | (cm−3) | (GHz) | (′′) | ηMB | |||
| HCN | 1–0 | 4.25 | 1.7 × 105 (a) | 88.631847 | IRAM-EMIR | 28 | 0.81 |
| H13CN | 1–0 | 4.14 | 1.3 × 106 (a) | 86.340184 | IRAM-EMIR | 29 | 0.81 |
| 2–1 | 12.43 | 1.2 × 106 (a) | 172.677881 | IRAM-EMIR | 14 | 0.68 | |
| CN | 1–0 | 5.45 | 1.1 × 105 (a) | 113.490985 | IRAM-EMIR | 22 | 0.78 |
| C34S | 3–2 | 13.9 | 4.4 × 105 (b) | 144.617109 | IRAM-EMIR | 16 | 0.74 |
| CS | 3–2 | 14.1 | 2.6 × 105 (a) | 146.969029 | IRAM-EMIR | 16 | 0.74 |
| 12CO | 6–5 | 116.2 | 1.0 × 105 (c) | 691.473076 | APEX-CHAMP+ | 9 | 0.48 |
| C18O | 6–5 | 110.6 | 2.6 × 105 (b) | 658.553278 | APEX-CHAMP+ | 10 | 0.48 |
Notes. Molecular data adopted from the Leiden Atomic and Molecular Database (LAMDA, Schöier et al. 2005) and the JPL database (Pickett et al. 1998). (a) Shirley (2015), assuming optically thin transition lines for an excitation temperature of 50 K. (b) Calculated based on JPL database (Pickett et al. 1998) assuming an excitation temperature of 50 K. (c) Yıldız et al. (2012).
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