Methanol rotational and derived kinetic temperatures.
|UT date||Freq. range||Linesa||Trot||Tgas|
|01/23.81||241–244b||10||17.9 ± 2.4||≥25|
|01/24.01||165||7||19.2 ± 3.9||21.3 ± 4.0|
|01/24.2||254–267||4||18.5 ± 2.5||18.6 ± 2.6|
|01/24/2||251–252||6 × 2||21.8 ± 7.1||24.2 ± 7.9|
|01/24.78||213–230||6||20.7 ± 3.0||20.6 ± 3.0|
Notes. (a) Number of lines used for the determination of Trot. Since the weighting is done according to the S/N of individual lines, if we take into account the lines below the formal detection threshold of 3 − σ, the derived Trot is not significantly changed. (b)These lines are more sensitive to the collision rate than to the gas temperature itself: for a larger collision rate, the inferred Tgas would be lower.
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