Fig. 4

Left column: maps of Ne determined from [S II] and [N II] lines (upper) and [Cl III] and a Te = 10 000 K (lower). The electron densities for collisional de-excitation of the [S II] and [Cl III]2 D3∕2 levels for these diagnostics are 3.1 × 103 and 2.4 × 104 cm−3 at 10 000 K respectively. Centre column: maps of Te determined from [S II] and [N II] lines (upper) and [S III] and a Ne = 1000 cm−3 (lower). Right column: maps of Te for the [O I] lines (upper) and the He I recombination lines (lower).
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