Table 1
Molecular species in this work.
| Molecule | Transition | Frequency GHz | Eup K | log10 Aij | Beam ″ | Peak range K | RMS noise range K | Line width range km s−1 |
|---|---|---|---|---|---|---|---|---|
| OTF Map: Nobeyama | ||||||||
| DCO+ | 1-0 | 72.03931 | 3.46 | -4.66 | 23 | 0.6-5 | 0.1-0.5 | 0.4-1 |
| Single pointing: APEX | ||||||||
| DCO+ | 3-2 | 216.11258 | 20.74 | -2.62 | 28.7 | 0.3-3.3 | 0.01-0.07 | 0.4-1 |
| c-C3H2 | 33,0-22,1 | 216.27876 | 19.47 | -3.33 | 28.7 | 0.05-0.8 | 0.01-0.07 | 0.5-2 |
| c-C3H2 a | 6-5 | 217.82215 | 38.61 | -3.23 | 28.7 | 0.05-0.8 | 0.01-0.07 | 0.5-2 |
| c-C3H2 | 51,4-42,3 | 217.94005 | 35.42 | -3.35 | 28.7 | 0.05-0.8 | 0.01-0.07 | 0.5-2 |
| p-H2CO | 30,3-20,2 | 218.22219 | 20.96 | -3.55 | 28.7 | 0.09-2 | 0.01-0.07 | 0.4-4 |
| p-H2CO | 32,2-22,1 | 218.47563 | 68.09 | -3.80 | 28.7 | 0.07-0.2 | 0.01-0.07 | 0.4-4 |
| p-H2CO | 32,1-22,0 | 218.76007 | 68.11 | -3.80 | 28.7 | 0.04-0.2 | 0.01-0.07 | 0.4-4 |
| DCO+ | 5-4 | 360.16978 | 51.86 | -2.42 | 18 | 0.1-2 | 0.02-0.15 | 0.4-1 |
| p-H2CO | 50,5-40,4 | 362.73602 | 52.31 | -2.86 | 18 | 0.1-1 | 0.02-0.15 | 0.4-4 |
Notes. (a)Contains both ortho- and para forms. All rest frequencies were taken from the Cologne Database for Molecular Spectroscopy (CDMS; Endres et al. 2016). The DCO+ entries are based on Caselli & Dore (2005). The c-C3H2 entry was based on Bogey et al. (1987) with transition frequencies important for our survey from Bogey et al. (1986) and from Spezzano et al. (2012). The H2CO entries are based on experimental data from Bocquet et al. (1996).
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