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Table 2.

Temperature- and density-sensitive line ratios from the NW and SE outflow-integrated spectra

Ratio Value Diagnostic
NW outflow-integrated spectrum

[O II]λ3727/λ3725 Tot 1.38 ± 0.01 Ne = 122 ± 12 cm−3
NC 1.34 ± 0.02 Ne = 180 ± 25 cm−3
OC 1.45 Ne ≈ 50 cm−3
[S II]λ6731/λ6716 Tot 1.16 ± 0.02 Ne = 365 ± 21 cm−3
NC 1.26 ± 0.01 Ne = 220 ± 20 cm−3
OC 0.89 ± 0.06 Ne = 1080 ± 240 cm−3
[O II](λ3726+λ3729)/(λ7319+λ7331) Tot 55 ± 12 Ne ≲ 100 cm−3
[S II](λ4069+λ4077)/(λ6716+λ6731) Tot 0.040 ± 0.001
[O III](λ5007+λ4959)/λ4363 Tot 64 ± 11 Te = 16 000 ± 4000
NC 83 ± 20 Te = 14 350 ± 3800
OC 49 ± 19 Te = 18 600 ± 7060
[N II](λ6548+λ6583)/λ5755 Tot 93 ± 25 Te = 10 350 ± 1930 K
NC 172 ± 7 Te = 8200 ± 75
OC 53 ± 8 Te = 13 600 ± 300
[S III](λ9531+λ9069)/λ6312 Tot 325 ± 10 Te = 8970 ± 270 K

SE outflow-integrated spectrum

[O II]λ3729/λ3726 tot 1.37 ± 0.11 Ne = 155 ± 75 cm−3
NC 1.45 Ne ≈ 50 cm−3
OC 1.35 ± 0.13 Ne = 195 ± 90 cm−3
[S II]λ6731/λ6716 tot 1.36 ± 0.02 Ne = 110 ± 25 cm−3
NC 1.32 ± 0.06 150 ± 60 cm−3
OC 1.38 ± 0.04 195 ± 45 cm−3
[O II](λ3726+λ3729)/(λ7319+λ7331) Tot 74.5 ± 2.7 Ne ≲ 100 cm−3
[S II](λ4069+λ4077)/(λ6716+λ6731) Tot 0.108 ± 0.005
[O III](λ5007+λ4959)/λ4363 Tot 41.7 ± 0.1 Te = 20 400 ± 55 K
[N II](λ6548+λ6583)/λ5755 Tot 160 ± 1 Te = 8430 ± 90 K
[S III](λ9531+λ9069)/λ6312 Tot > 181* Te <  6500 K

Notes. De-reddened flux ratios (from Balmer decrement measurements) were used to the derive plasma properties reported in the table. *: 3σ upper limits.

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