Table B.1
L1489-IRS: Temperatures and beam-averaged col- umn densities derived for the envelope (see text).
| Species | Trot | Ntot c |
|---|---|---|
| (K) | (cm−2) | |
| Envelope | ||
| SO | 20 (13)a | 2(3) × 1012 |
| p-H2CO | 23 (4)a | 19(6) × 1011 |
| c-C3H2 | 19 (5)a | 5(2) × 1011 |
| 13CO | 20 − 35b | 2 − 3 × 1015 |
| C18O | 20 − 35b | 3 − 4 × 1014 |
| C15N | 20 − 35b | 23 − 27 × 1010 |
| CCD | 20 − 35b | 17 − 18 × 1011 |
| DCNc | 20 − 35b | 90 − 98 × 109 |
| DCO+ | 20 − 35b | 3 − 4 × 1010 |
| o-D2CO | 20 − 35b | 6 − 7 × 1010 |
Notes. (a) Temperatures and column densities as derived from rotational diagrams (see Table 5).
(b)Temperature range assumed from the c-C3H2 analysis of the envelope emission (see text). (c) Column density is corrected for opacity as derived by fitting the hyperfine line pattern (see Table 3). (c) Source av- eraged column densities can be derived by applying the filling factor reported in Table 6 for c-C3H2 as an envelope tracer.
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