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Table 5:

Physical conditions in the Milky Way foreground gas as derived from the data.

Star
Sk -67$^\circ $111 LH 54-425 Sk -67$^\circ $107 Sk -67$^\circ $106 Sk -67$^\circ $104 Sk -67$^\circ $101 Comments
$\log N(H {\sc i})$ 20.6 20.2 20.9 21.0 20.9 21.0 Sect. 6.1a
$\log N \rm (H_2)$ 15.9 15.8 17.6 18.0 18.1 18.1 Sect. 4

$T_{\rm exc}$(H2) [K]

220 190 75 80 65 65 Sect. 4.2
$\xi $ 1.0 2.4 1.3 1.3 1.8 1.4 Sect. 6.1
$n_{\rm H}$(C  I) [cm-3] <65 <125 80 55 65 40 Sect. 6.2
ne [cm-3] 0.045 0.072 0.007 0.007 0.005 0.014 Sect. 6.2
$D_{\rm tot}$[pc]     3.5 6.5 4.5 9 Sect. 7
$D_{\rm mol}$[pc] 0.6b 0.1b 0.5 1.1 0.8 1.8 Sect. 7
Shielding as derived from H2:              
  low low         Sect. 4.2
Depletion              
Fe, Mn, Ni     high high high high Sect. 5

Notes.  (a) Derived from O I and (O/H) $_{\odot}=-3.34$ (Asplund et al. 2005). (b) Based on $\xi $ and a reference LOS averaged over the values for Sk -67$^\circ $101 to Sk -67$^\circ $107.


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