Table 9
Observed integrated flux density and peak flux density ratios (Integr. ratio and Peak ratio) and LTE opacity ratio of OH hyperfine transitions in J = 27/2, 29/2, 33/2 and 35/2.
| υ = 0, OH level | J = 27/2, 13−13/14−14 | J = 29/2, 14−14/15−15 | J = 33/2, 17−17/16−16 | J = 35/2, 18−18/17−17 |
|---|---|---|---|---|
| Integr. ratio – Peak ratio | Integr. ratio – Peak ratio | Peak ratio(a) | Peak ratio(a) | |
| R Hya | 0.75 ± 0.15 − 0.96 ± 0.10 | 0.86 ± 0.15 − 0.93 ± 0.10 | 0.95 + 0.40 | ≳1.90 |
| R Aql | 1.13 ± 0.15 − 1.40 ± 0.10 | 0.70 ± 0.15 − 0.90 ± 0.10 | ≳1.30 | |
| S Pav | 1.41 ± 0.15 − 1.60 ± 0.15 | 0.81 ± 0.15 − 0.90 ± 0.15 | >0.90 | |
| VX Sgr | 0.71 ± 0.15 − 0.71 ± 0.15 | |||
| T Mic | 0.69 ± 0.15 − 0.83 ± 0.15 | |||
| LTE opacity ratio | 0.93 | 0.94 | 1.06 | 1.06 |
Notes. Ratios derived from the flux density of the lower frequency of the hyperfine transition in a given rotational level divided by the flux density in the same level of the higher frequency hyperfine transition. The non LTE ratios are shown in italics (see Sect 9.1). Formal uncertainties lie in the range ±0.10 to ±0.15 except in the J = 33/2 rotational level. The LTE ratios are shown in the last row of this table. (a)The lower limits in J = 33/2 and 35/2 are derived from the 3σ signal level outside the expected line feature for the undetected 16−16 (J = 33/2) and 17−17 (J = 35/2) hyperfine transitions.
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