Table 3
Astrophysically important molecular transitions within the frequency coverage of SEPIA Band 5.
| Molecule | Transition | Frequency (GHz) | Comment |
|---|---|---|---|
| CH3CN | J = 9–8 | 165.60 | Several K-components |
| H2S | JKa,Kc = 11,1−10,1 | 168.76 | |
| HC18O+ | J = 2–1 | 170.32 | |
| CH3CCH | J = 10–9 | 170.90 | Several K-components |
| SiO, v = 2 | J = 4–3 | 171.28 | |
| HC15N | J = 2–1 | 172.11 | |
| SiO, v = 1 | J = 4–3 | 172.48 | |
| H13CN | J = 2–1 | 172.68 | |
| H13CO+ | J = 2–1 | 173.51 | |
| SiO, v = 0 | J = 4–3 | 173.69 | |
| CCH | N = 2–1 | 174.70 | Several lines |
| HCN | J = 2–1 | 177.26 | |
| HCO+ | J = 2–1 | 178.38 | |
| HNC | J = 2–1 | 181.32 | |
| H2O | JKa,Kc = 31,3−22,0 | 183.31 | |
| CH3CN | J = 10–9 | 183.90 | Several K-components |
| 13CS | J = 4–3 | 184.98 | |
| N2H+ | J = 2–1 | 186.34 | |
| CH3CCH | J = 11–10 | 187.90 | Several K-components |
| C34S | J = 4–3 | 192.82 | |
| CH3OH | J = 4–3 | 193.50 | Several lines |
| CS | J = 4–3 | 195.95 | |
| CH3CN | J = 11–10 | 202.30 | Several K-components |
H O |
JKa,Kc = 31,3−22,0 | 203.41 | |
| CH3CCH | J = 12–11 | 205.00 | Several K-components |
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