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Table 5:

Abundance profiles derived from the observations.
Serpens-FIRS 1 X0 R0 (AU) X1 R1 X2 rms (K km s-1) Diameter('')/ HPBW('')
C18O  1.4 $\times$ 10-7 2000 <7 $\times$ 10-9 6000 1.1 $\times$ 10-7 0.27 2.3
N2H+ 4.0 $\times$ 10-10 3000 <3 $\times$ 10-11 6000 2.5 $\times$ 10-10 0.29 1.9
N2D+ <2 $\times$ 10-12 6000 1.9 $\times$ 10-11 0.6 3.1
$T_{\rm ev}^*$(K) 20  
$n_{\rm ev}^*$(cm-3) 2.4 $\times$ 106  
Cep E-mm X0 R0 (AU) X1 R1 X2 rms (K km s-1)  
C18O  6.0 $\times$ 10-8 3500 1.1 $\times$ 10-7 $\times$ (r/35 800) 0.24 4.4
N2H+ 2.4 $\times$ 10-10 6000 2.5 $\times$ 10-10 $\times$ (r/35 800) 0.28 3.7
N2D+ 7.0 $\times$ 10-12   6.1
$T_{\rm ev}$(K) 20  
$n_{\rm ev}$(cm-3) 1.0 $\times$ 106  
IC 1396 N X0 R0 (AU) X1 R1 X2 rms (K km s-1)  
C18O  6.0 $\times$ 10-8 5500 1.25 $\times$ 10-7 $\times$ (r/29 600) 0.24 3.5
N2H+ 4.2 $\times$ 10-10 10 000 1.0 $\times$ 10-11 15 000 1.8 $\times$ 10-10 0.50 3.0
N2D+ <7 $\times$ 10-12   4.9
$T_{\rm ev}$(K) 19  
$n_{\rm ev}$(cm-3) 7.0 $\times$ 105  
CB3 X0 R0 (AU) X1 R1 X2 rms (K km s-1)  
C18O  1.3 $\times$ 10-7 25 000 <3.0 $\times$ 10-8 60 000 9.0 $\times$ 10-7 0.24 3.7
N2H+ 6.5 $\times$ 10-10 0.45 3.1
N2D+ 3.0 $\times$ 10-11   5.1
$T_{\rm ev}$(K) 15  
$n_{\rm ev}$(cm-3) 3.0 $\times$ 104  
NGC 7129-FIRS 2 X0 R0 (AU) X1 R1 X2 rms (K km s-1)  
C18O  4.0 $\times$ 10-8 0.4 1.4
N2H+ 4.7 $\times$ 10-10 0.4 1.1
N2D+ <3.0 $\times$ 10-12 9000 4.5 $\times$ 10-11 11 000 <3.0 $\times$ 10-12 0.13 2.7

Notes. (*) Temperature and density at the CO evaporation radius.


Source LaTeX | All tables | In the text

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