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Table 2.
H2CCN and HDCCN column densities in TMC-1.
| Parameter/Trot | 5 K | 6 K | 7 K | 8 K | 9 K | 10 K |
|---|---|---|---|---|---|---|
| N(o-H2CCN) (a) | 131 | 121 | 118 | 120 | 124 | 128 |
| N(p-H2CCN) (a) | 17 | 17 | 17 | 17 | 18 | 19 |
| N(H2CCN) (a) | 148 | 138 | 135 | 137 | 142 | 147 |
| N(o-H2CCN)/N(p-H2CCN) | 7.7 | 7.1 | 7.0 | 7.1 | 6.9 | 6.7 |
| N(HDCCN) (a) | 7.4 | 7.5 | 8.0 | 8.8 | 9.6 | 10.5 |
| N(H2CCN)/N(HDCCN) | 20.0 | 18.4 | 16.9 | 15.6 | 14.8 | 14.0 |
Notes.
(a)
Column densities are in units of 1011 cm−2. The uncertainty on the derived column densities is ∼10% based on the adopted calibration accuracy (see Sect. 2). The adopted line width for all features of H2CCN and HDCCN is 0.6 km s−1.
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