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Table 2:

Summary of the PDR modelling of the [C  II] emission for 5 points along the HIFI S-NW cut ( $\Delta \alpha = -47\hbox {$^{\prime \prime }$ }$).

Pos. ( $\Delta\delta$) 		$d_{\rm proj}$ UV field T PAH+/PAH0 Ionization N(H) [C  II] local emissivity [C  II] flux
    a b c parameter ($\gamma$) b d b HIFI Model b
( $^{\prime \prime }$) ( $^{\prime \prime }$) (G0) (K)   (103 G0 K1/2 cm3) (1021 cm-2) (10-21 W m-3) (10-7 W m-2 sr-1)
NW3 (16) 50 1873 337 / 333 1.9 11.0 / 29.5 10.5 4.4 / 1.4 8.0 11.0 / 8.0
NW2 (12) 48 1975 342 / 333 2.7 11.7 / 31.1 8.1 4.4 / 1.4 6.9 9.5 / 7.1
NW1 (-3) 47 2100 348 / 333 9.6 12.6 / 33.0 3.9 4.4 / 1.4 3.3 5.6 / 4.6
S1 (-63) 79 747 248 / 320 1.7 3.8 / 11.8 8.7 4.2 / 1.4 3.1 8.3 / 7.2
S2 (-73) 87 607 230 / 312 0.96 3.0 / 9.5 14.0 4.1 / 1.4 3.7 9.6 / 8.4

Notes. (a) Calculated using a projected distance and G0=2600 at 42 $^{\prime \prime }$ from the star; (b) From the PDR model using $n_{\rm H} = 2\times10^4 /7\times10^3~$cm-3, respectively; (c) Given as the ratio of the mid-IR intensities shown in Fig. 5; (d) Derived from the analysis of the mid-IR emission spectra.


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