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Table 3:

Physical and chemical characteristics of two TDR-models defined by their parameters $n_{\rm H}$, $A_{\rm V}$ and a. $f_{\rm M}(X)$, $f_{\rm VA}(X)$ and $f_{\rm VR}(X)$ are the contributions of the ambient medium, the active and the relaxation phases respectively, to the column density N(X) of the species X. All models are computed for $N_{\rm H} = 1.8$ $\times $ $10^{21}~\rm{cm}^{-2}$. The relative abundances are given in the last columns. Numbers in parenthesis are powers of 10.
Parameters
$n_{\rm H}$ 30 cm-3 100 cm-3
$A_{\rm V}$ 0.1 mag 0.1 mag
a 3 (-11) s-1 3 (-11) s-1
Physical properties
$\overline {\Gamma }_{\rm turb}$ 9.3 (-24) erg cm-3 s-1 6.9 (-23) erg cm-3 s-1
$T_{\rm amb}$ 114 K 58 K
$T_{\rm max}$ 1000 K 807 K
$\tau _{\rm V}$ 1070 yr 506 yr
r0 40 AU 21 AU
$\mathcal{N}_{\rm VA}$ 215 17
$f_{\rm v}$ 2.2 (-2) 2.9 (-3)
Chemical properties
  $f_{\rm M}(X)$ $f_{\rm VA}(X)$ $f_{\rm VR}(X)$ N(X) $N(X)/N_{\rm H}$ $f_{\rm M}(X)$ $f_{\rm VA}(X)$ $f_{\rm VR}(X)$ N(X) $N(X)/N_{\rm H}$
Species % % % cm-2   % % % cm-2  
H 100 0a 0a 7.0 (20) 3.9 (-01) 100 0a 0a 2.8 (20) 1.6 (-02)
H2 100 0a 0a 5.5 (20) 3.1 (-01) 100 0a 0a 7.6 (20) 4.2 (-01)
H3+ 81 5 14 2.9 (13) 1.6 (-08) 93 2 5 1.2 (13) 6.7 (-09)
C 19 65 35 4.4 (14) 2.4 (-07) 68 23 9 5.6 (14) 3.1 (-07)
CH 5 86 9 8.1 (12) 4.5 (-09) 22 69 9 7.9 (12) 4.4 (-09)
CH+ 0.2 96 4 2.2 (13) 1.2 (-08) 2 95 3 1.3 (12) 7.2 (-10)
C2 0.5 72 28 4.0 (11) 2.2 (-10) 3 46 51 1.4 (12) 7.8 (-10)
C2H 0.1 76 24 6.3 (11) 3.5 (-10) 0.4 61 39 3.5 (12) 1.9 (-09)
OH 52 17 31 8.7 (13) 4.8 (-08) 63 18 19 2.3 (13) 1.3 (-08)
H2O 57 11 32 1.3 (13) 7.2 (-09) 68 14 18 3.6 (12) 2.0 (-09)
H3O+ 35 23 42 1.3 (13) 7.2 (-09) 32 40 28 1.1 (12) 6.1 (-10)
CO 57 16 27 2.6 (13) 1.4 (-08) 67 12 21 3.0 (13) 1.7 (-08)
HCO+ 14 69 17 8.4 (11) 4.7 (-10) 11 77 12 3.7 (11) 2.1 (-10)
O2 67 11 22 3.8 (10) 2.1 (-11) 80 10 10 4.1 (10) 2.3 (-11)
SH+ 0.1 98 2 6.2 (11) 3.4 (-10) 0.2 98 2 2.1 (11) 1.2 (-10)
CS 3 85 12 1.8 (09) 1.0 (-12) 11 69 20 7.0 (09) 3.9 (-12)
HCS+ 0.6 93 7 1.1 (09) 6.1 (-13) 1 89 10 1.9 (09) 1.1 (-12)
CN 1 79 20 2.3 (11) 1.3 (-10) 8 63 29 1.6 (11) 8.9 (-11)
HCN 0.5 88 12 3.3 (10) 1.8 (-11) 3 81 16 2.6 (10) 1.4 (-11)
HNC 2 89 9 5.9 (09) 3.3 (-12) 17 74 9 4.0 (09) 2.2 (-13)
a For the reason given in Sect. 5.4 $f_{\rm VA}({\rm H})= f_{\rm VR}({\rm H}) = f_{\rm VA}({\rm H_2}) = f_{\rm VR}({\rm H_2}) = 0$, because the densities
of H and H2 are not modified in the vortex.


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