Table 3
Summary of best-fitting PDR model parameters found from each set of observed diagnostic lines and the various corrections considered in this work, where we state the range of values together with the corresponding median value (in brackets) determined for each of the regions in Fig. 2.
| Diagnostics | [Cii] observed | [Cii] corrected via
 |
[Cii] corrected via
 |
||||||||
| log n/ cm3 | log G0 | T/K | log n/ cm3 | log G0 | T/K | log n/ cm3 | log G0 | T/K | |||
|
|
|||||||||||
| [Oi] 63 μm | Observed | Constant correctiona | Constant correctiona | ||||||||
|
|
|||||||||||
| Centre | 3.75−6.25(6.25) | 0.50−1.00(0.50) | 27−33(30) | 1.50−2.00(2.00) | 1.50−1.75(1.75) | 170−347(170) | 1.50−4.25(2.00) | 1.00−1.75(1.75) | 37−391(170) | ||
| Mid-plane | 1.00−6.25(3.75) | 0.50−1.25(0.25) | 27−282(37) | 1.00−2.75(2.50) | 1.00−2.75(2.25) | 170−598(256) | 1.00−2.75(2.25) | 1.00−2.50(2.00) | 170−598(256) | ||
| Off-plane | 1.00−4.00(2.00) | 0.25−2.00(1.25) | 27−391(136) | 1.00−4.25(2.75) | 0.25−3.00(2.00) | 42−598(202) | 1.00−4.25(2.75) | 0.25−2.75(2.00) | 43−598(197) | ||
| Outer disc | 2.00−3.75(2.75) | 0.50−1.75(1.50) | 36−138(96) | 3.00−3.50(3.25) | 1.75−2.25(2.00) | 97−197(163) | 3.00−4.25(3.25) | 0.50−2.25(2.00) | 45−197(155) | ||
|
|
|||||||||||
| [Oi] 63 μm | Observed | Varying correctionb | Varying correctionb | ||||||||
|
|
|||||||||||
| Centre | 3.75−6.25(6.25) | 0.50−1.00(0.50) | 27−33(30) | 1.00−2.75(1.75) | 1.50−2.50(2.15) | 220−598(401) | 1.00−4.50(1.25) | 1.00−2.75(1.75) | 37−598(547) | ||
| Mid-plane | 1.00−6.25(3.75) | 0.50−1.25(0.25) | 27−282(37) | 1.00−4.50(3.00) | 0.25−3.00(2.50) | 45−1080(197) | 1.00−4.50(3.00) | 0.25−3.00(2.50) | 45−598(197) | ||
| Off-plane | 1.00−4.00(2.00) | 0.25−2.00(1.25) | 27−391(136) | 2.75−4.50(3.25) | 0.25−3.00(2.25) | 45−320 (191) | 2.50−4.25(3.25) | 0.25−3.00(2.25) | 45−307(191) | ||
| Outer disc | 2.00−3.75(2.75) | 0.50−1.75(1.50) | 36−138(96) | 3.50−4.25(3.75) | 0.75−2.50(2.25) | 50−191 (144) | 3.50−4.25(4.00) | 0.50−2.50(1.75) | 45−191(80) | ||
|
|
|||||||||||
| [Oi] 145 μm | Observed | Observed | Observed | ||||||||
|
|
|||||||||||
| Centre | 1.00−2.25(1.75) | 1.50−2.50(2.00) | 256−1080(598) | 1.00−2.75(2.00) | 1.75−3.00(2.50) | 322−1080(380) | 1.00−4.75(1.75) | 0.25−3.00(2.25) | 45−1470(823) | ||
| Mid-plane | 1.00−4.50(2.50) | 0.25−3.00(2.00) | 45−620(234) | 1.00−4.50(3.00) | 0.25−3.00(2.50) | 45−1080(197) | 1.00−4.50(2.50) | 0.25−3.00(2.25) | 45−1470(256) | ||
| Off-plane | 1.00−4.50(3.25) | 0.25−3.00(2.25) | 45−598(191) | 1.00−4.50(3.25) | 0.25−3.00(2.25) | 45−823(191) | 1.00−4.50(3.25) | 0.25−3.00(2.25) | 45−1080(191) | ||
| Outer disc | 2.75−4.50(4.00) | 0.50−2.50(2.00) | 45−220(112) | 3.00−4.25(4.00) | 0.50−2.50(1.75) | 45−197(80) | 2.75−4.50(4.00) | 0.50−2.50(2.00) | 45−220(112) | ||
Notes.
Observed [Oi] 63 μm flux increased by factor of 2, and the TIR emission reduced by a factor of 2 (see Sect. 4.1).
Observed [Oi] 63 μm flux increased by factor of 4 in centre and mid-plane and a factor of 2 everywhere else, and the TIR emission reduced by a factor of 2 (see Sect. 4.5).
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