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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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