Table 2
Frequency, upper level energy, Eu, and Einstein coefficient Aul of observed lines.
| Species | Transition | Frequency | E u | A ul |
| [GHz] | [K] | [s-1] | ||
|
|
||||
| CH+ | 1–0 | 835.1375 | 40.08 | 6.4(–3) |
| CH+ | 2–1 | 1669.2813 | 120.19 | 6.1(–2) |
| OH+ |
|
1032.9979 | 49.58 | 1.4(–2) |
|
1033.0044 | 49.58 | 3.5(–3) | |
|
1033.1118 | 49.58 | 7.0(–3) | |
|
1033.1186∗ | 49.58 | 1.8(–2) | |
| o-H2O+ | 111 3/2 3/2−000 1/2 1/2 | 1115.1507 | 53.51 | 1.7(–2) |
| 111 3/2 1/2−000 1/2 1/2 | 1115.1862 | 53.51 | 2.8(–2) | |
| 111 3/2 5/2−000 1/2 3/2 | 1115.2041∗ | 53.51 | 3.1(–2) | |
| 111 3/2 3/2−000 1/2 3/2 | 1115.2629 | 53.51 | 1.4(–2) | |
| 111 3/2 1/2−000 1/2 3/2 | 1115.2983 | 53.51 | 3.5(–3) | |
| o-H3O+ | 4 −3 |
1031.2995 | 232.2 | 5.1(–3) |
| SH+ |
|
526.0387 | 25.25 | 8.0(–4) |
|
526.0479∗ | 25.25 | 9.7(–4) | |
|
526.1250 | 25.25 | 1.6(–4) | |
| HCO+ | 6–5 | 535.0616 | 89.9 | 1.3(–2) |
| CH |
|
536.7611∗ | 25.76 | 6.4(–4) |
|
536.7820 | 25.76 | 2.3(–4) | |
|
536.7956 | 25.76 | 4.6(–4) | |
| C+ |
|
1900.5369 | 91.21 | 2.3(–6) |
Notes. The strongest (hyper)fine transition is labeled with an asterisk (∗ symbol) and used to set the velocity scale in Figs. A.1–A.8. The numbers in parentheses give the decimal power. Molecular and atomic data are taken from CDMS (Müller et al. 2001).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.