Table 1
Spectral setup and parameters of the detected molecular transitions.
| Spectral window | Frequency range | Spectral resolution | Molecular transition | Aij a | Eu a | ncrit b |
|---|---|---|---|---|---|---|
| [GHz] | [km s−1] | [s−1] | [K] | [cm−3] | ||
| spw 1a | 337.002−337.119 | 0.11 | C17O J = 3 − 2 | 2.3 × 10−6 | 32.3 | 3.5 × 104 |
| spw 1b | 337.337−337.454 | 0.11 | C34S J = 7 − 6 | 8.4 × 10−4 | 50.2 | 1.3 × 107 |
| spw 2 | 338.165−338.634 | 0.22 | c−C3 H2 55,1 − 44,0 (para) | 1.6 × 10−3 | 48.8 | 1.2 × 108 |
| SO2 184,14 − 183,15 | 3.3 × 10−4 | 196.8 | 5.9 × 107 | |||
| SO2 201,19 − 192,18 | 2.9 × 10−4 | 198.9 | 3.8 × 107 | |||
| spw 3 | 346.880−347.115 | 0.11 | H13CO+ J = 4 − 3 | 3.3 × 10−3 | 41.6 | 8.5 × 106 |
| spw 4 | 349.165−349.634 | 0.22 | c−C3 H2 55,0 − 44,1 (ortho) | 1.6 × 10−3 | 49.0 | 1.3 × 108 |
| C2 H N = 4 − 3, J = 9∕2 − 7∕2, F = 5 − 4 | 1.3 × 10−4 | 41.9 | 2.2 × 107 | |||
| C2 H N = 4 − 3, J = 9∕2 − 7∕2, F = 4 − 3 | 1.3 × 10−4 | 41.9 | 2.3 × 107 | |||
| C2 H N = 4 − 3, J = 7∕2 − 5∕2, F = 4 − 3 | 1.2 × 10−4 | 41.9 | 1.7 × 107 | |||
| C2 H N = 4 − 3, J = 7∕2 − 5∕2, F = 3 − 2 | 1.2 × 10−4 | 41.9 | 1.8 × 107 |
Notes. (a) Values from the CDMS database (Müller et al. 2001). (b)Calculated values for a collisional temperature of 30 K and collisional rates from the Leiden Atomic and Molecular Database (LAMDA; Schöier et al. 2005). The collisional rates of specific species were taken from the following works: C17O from Yang et al. (2010), C34S from Lique et al. (2006), c−C3H2 from Chandra & Kegel (2000), SO2 from Balança et al. (2016), H13CO+ from Flower (1999) and C2H from Spielfiedel et al. (2012).
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