Table A.2
Spectroscopic information of the transitions of a-ethyl formate detected toward G+0.693-0.027, shown in Figure 3.
| Frequency (GHz) |
Transition(a) | log I (300 K) (nm2 MHz) |
Eup (K) |
Blending |
|---|---|---|---|---|
| 31.8852150 (19) | 61,6–51,5 | −6.1602 | 6.0 | Blended: C6H |
| 32.7188633 (19) | 60,6–50,5 | −6.1251 | 5.5 | Blended: H83γ |
| 32.8790743 (19) | 62,5–52,4 | −6.1757 | 8.3 | Unblended |
| 33.8355565 (19) | 61,5–51,4 | −6.1090 | 6.4 | Slightly blended: CH3CHCO |
| 38.3453139 (22) | 72,6–62,5 | −5.9635 | 10.2 | Slightly blended: HCCCH2CN |
| 38.4274410 (22) | 73,5–63,4 | −6.0180 | 13.8 | Blended: HCCCH2CN |
| 38.4342157 (22) | 73,4–63,3 | −6.0178 | 13.8 | Slightly blended: U-line |
| 38.6374107 (22) | 72,5–62,4 | −5.9570 | 10.2 | Blended: H86δ |
| 39.4528074 (22) | 71,6–61,5 | −5.9080 | 8.2 | Slightly blended: U-line |
| 42.4683643 (25) | 81,8–71,7 | −5.7861 | 9.8 | Blended: 13CH3CH2CN |
| 43.8052932 (25) | 82,7–72,6 | −5.7838 | 12.3 | Slightly blended: HCCCH2CN |
| 44.2387698 (25) | 82,6–72,5 | −5.7753 | 12.3 | Slightly blended: U-line * |
| 45.0591299 (25) | 81,7–71,6 | −5.7354 | 10.4 | Unblended |
| 48.7428006 (27) | 90,9–80,8 | −5.6117 | 11.7 | Unblended |
| 49.2581397 (27) | 92,8–82,7 | −5.6280 | 14.6 | Slightly blended: HCCCH2CN |
| 49.8680897 (27) | 92,7–82,6 | −5.6174 | 14.7 | Unblended |
Notes. (a)The rotational energy levels are labeled using the conventional notation for asymmetric tops: JKa,Kc. Numbers in parentheses represent the predicted uncertainty associated to the last digits. Transitions that were not used in the AUTOFIT owing to a non-negligible contamination with a U-line are flagged with an asterisk (*).
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