Table 8
Parameters of our best-fit LTE model of ethyl cyanide and its isotopologues toward Sgr B2(N2).
| Molecule | N det a | N b | F vib c |
d
|
| (cm-2) | ||||
|
|
||||
| C2H5CNe | 154 | 6.2 (18) | 1.38 | 1 |
| 13CH3CH2CNe | 54 | 1.9 (17) | 1.38 | 32 |
| CH313CH2CNe | 38 | 1.9 (17) | 1.38 | 32 |
| CH3CH213CNe | 37 | 1.9 (17) | 1.38 | 32 |
| 13CH313CH2CN | 8 | 7.6 (15) | 1.38 | 818 |
| 13CH3CH213CN | 7 | 7.6 (15) | 1.38 | 818 |
| CH313CH213CN | 8 | 7.6 (15) | 1.38 | 818 |
| C2H5C15Ne | 9 | 1.2 (16) | 1.38 | 500 |
Notes. For all species, the model assumes a source size of 1.20″, a rotational temperature of 150 K, a linewidth of 5.0 km s-1, and a velocity offset of –0.8 km s-1 with respect to the assumed systemic velocity of Sgr B2(N2), Vlsr = 74 km s-1.
Number of detected lines (conservative estimate, see Sect. 3 of Belloche et al. 2016). One line of a given species may mean a group of transitions of that species that are blended together.
Correction factor that was applied to the column density to account for the contribution of vibrationally excited states.
For these species, the analysis was performed in Belloche et al. (2016).
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