Table A.5
Spectroscopic information of the transitions of lactaldehyde detected toward G+0.693-0.027, shown in Figure 5.
| Frequency (GHz) |
Transition(a) | log I (300 K) (nm2 MHz) |
Eup (K) |
Blending |
|---|---|---|---|---|
| 32.8030391 (7) | 50,5–41,4 | −5.8204 | 5.0 | Unblended |
| 34.8797382 (13) | 94,6–93,7 | −5.6662 | 19.7 | Blended: aGg'-(CH2OH)2 * |
| 34.9104833 (7) | 51,5–40,4 | −5.7505 | 5.1 | Blended: U-line * |
| 39.6056410 (8) | 60,6–51,5 | −5.5481 | 7.0 | Unblended |
| 39.8461672 (16) | 95,4–94,5 | −5.5811 | 21.7 | Slightly blended: U-line * |
| 40.7250108 (8) | 61,6–50,5 | −5.5188 | 7.0 | Unblended |
| 46.1743922 (9) | 70,7–61,6 | −5.3312 | 9.2 | Blended: 13CH2CHCN |
| 85.7293506 (14) | 74,3–63,4 | −5.0545 | 13.6 | Unblended * |
| 101.649525 (50) | 85,4–54,3 | −4.7871 | 18.4 | Blended: C2H3CN * |
| 103.911545 (50) | 76,2–65,1 | −4.6700 | 18.0 | Blended: N-CH3NHCHO |
| 103.9116165 (19) | 76,1–65,1 | −5.3245 | 18.0 | Blended: N-CH3NHCHO |
| 103.9130904 (19) | 76,2–65,2 | −5.3245 | 18.0 | Blended: N-CH3NHCHO |
| 103.913219 (50) | 76,1–65,2 | −4.6700 | 18.0 | Blended: N-CH3NHCHO |
| 137.629993 (50) | 98,2–87,1 | −4.3056 | 30.3 | Blended: CH3C(O)OCH3 |
| 137.629993 (50) | 98,1–87,1 | −4.9688 | 30.3 | Blended: CH3C(O)OCH3 |
| 137.629993 (50) | 98,2–87,2 | −4.9688 | 30.3 | Blended: CH3C(O)OCH3 |
| 137.629993 (50) | 98,1–87,2 | −4.3056 | 30.3 | Blended: CH3C(O)OCH3 |
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 or a lower S/N ratio are flagged with an asterisk (*).
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