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Table 4

Column densities and excitation temperatures obtained from fitting the excitation diagrams of the H2 lines observed towards the H II region, the atomic PDR, DF 1, DF 2, and DF 3 (Fig. 15).

Foreground formalism Intermingled formalism
H2 series NH2(×1018 cm−2)${N_{{{\rm{H}}_2}}}\left( { \times {{10}^{18}}{\rm{c}}{{\rm{m}}^{ - 2}}} \right)$ T (K) NH2(×1018 cm−2)${N_{{{\rm{H}}_2}}}\left( { \times {{10}^{18}}{\rm{c}}{{\rm{m}}^{ - 2}}} \right)$ T (K)
H II region
0–0 S 0.19 ± 0.05 2753 ± 172 – –
1–0 Q 0.24 ± 0.14 2391 ± 376 – –
1–0 O 3.59 ± 6.45 1135 ± 335 – –
1–0 S 0.40 ± 0.10 2034 ± 107 – –
1–1 S 0.08 ± 0.03 3813 ± 223 – –
Atomic PDR
0–0 S 0.12 ± 0.04 3393 ± 224 0.12 ± 0.05 3396 ± 224
1–0 Q 0.61 ± 0.35 1996 ± 284 0.62 ± 0.36 1996 ± 284
1–0 O 11.5 ± 15.7 969 ± 207 10.9 ± 16.2 967 ± 207
1–0 S 0.96 ± 0.32 1598 ± 109 0.99 ± 0.33 1592 ± 108
1–1 S 0.13 ± 0.08 3527 ± 413 0.14 ± 0.09 3531 ± 414
DF 1
0–0 S 0.58 ± 0.09 3033 ± 119 0.89 ± 0.15 3105 ± 121
1–0 Q 9.83 ± 2.96 1477 ± 88 17.8 ± 5.36 1481 ± 88
1–0 O 10.7 ± 11.0 1326 ± 259 22.9 ± 20.35 1273 ± 238
1–0 S 5.07 ± 3.07 1617 ± 206 10.5 ± 6.49 1534 ± 189
1–1 S 0.27 ± 0.04 3699 ± 100 0.40 ± 0.06 3795 ± 100
DF 2
0–0 S 0.73 ± 0.09 2996 ± 84 0.75 ± 0.10 3001 ± 84
1–0 Q 4.10 ± 2.54 1728 ± 204 4.26 ± 2.64 1728 ± 204
1–0 O 8.23 ± 8.62 1437 ± 309 8.66 ± 9.09 1432 ± 306
1–0 S 5.46 ± 2.94 1723 ± 193 5.77 ± 3.12 1712 ± 191
1–1 S 0.40 ± 0.08 3631 ± 124 0.41 ± 0.08 3638 ± 124
DF 3
0–0 S 0.89 ± 0.10 2852 ± 57 0.89 ± 0.10 2852 ± 57
1–0 Q 6.18 ± 5.61 1527 ± 218 6.21 ± 5.63 1527 ± 219
1–0 O 16.7 ± 27.8 1151 ± 320 16.7 ± 28.0 1151 ± 320
1–0 S 14.0 ± 12.1 1180 ± 163 14.1 ± 12.2 1179 ± 163
1–1 S 0.65 ± 0.13 3156 ± 110 0.65 ± 0.13 3157 ± 110

Notes. Except for the H II region, all the H2 lines in the excitation diagrams are first corrected for foreground visual extinction and subsequently for extinction within the PDR using the foreground and intermingled formalisms. In the H II region, the lines are only corrected for the foreground visual extinction.

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