Table 4: Forbidden and permitted SMC N88A $\&$ B emission line intensities normalized to H$\beta $.
$\lambda $ Ion $I\lambda/$H$\beta $ S/N $I\lambda/$H$\beta $ $I\lambda/$H$\beta $ S/N $\lambda $ Ion $I\lambda/$H$\beta $ S/N $I\lambda/$H$\beta $ $I\lambda/$H$\beta $ S/N
    N88A91   N88B91 N88A97       N88A91   N88B91 N88A97  
3727 [O II] 0.2412 457 1.9000 0.5304 3103 5958 Si II 0.0013 19      
3868 [Ne III] 0.3955 670 0.2099 0.5495 417 5979 Si II 0.0012 17      
4072 [S II] 0.0071 37 0.0075 0.0046 3 6046 O I 0.0011 17      
4076 [S II] 0.0024 8       6300 [O I] 0.0131 130 0.0387 0.0136 45
4100 H $\delta$ 0.1893 500 0.2055 0.2140 220 6311 [S III] 0.0238 197 0.0164 0.0220 82
4157 O II 0.0003 2       6347 Si II 0.0013 14      
4267 C II 0.0002 1       6364 [O I] 0.0043 54      
4287 [Fe II] 0.0010 7       6563 H $\alpha$     3.3900 4.15  
4340 H $\gamma$ 0.3907 780 0.4115 0.4400 458 6584 [N II] 0.0306 197 0.1204 0.0461 91
4363 [O III] 0.1095 338 0.0526 0.1020 130 6678 He I 0.0433 367 0.0290 0.0438 113
4415 O II 0.0012 7       6717 [S II] 0.0214 230 0.1273 0.0301 94
4471 He I 0.0394 170 0.0332 0.0519 48 6731 [S II] 0.0325 288 0.1124 0.0393 109
4649 O II 0.0003 3       7002 O I 0.0017 20      
4658 [Fe III] 0.0055 33       7135 [Ar III] 0.1297 729 0.0891 0.1022 259
4701 [Fe III] 0.0016 14       7256 O I 0.0018 20      
4711 [Ar IV]b 0.0090 90 0.0043 0.0171 28 7325 [O II] 0.0525 268 0.0861 0.0495 121
4740 [Ar IV] 0.0068 58 0.0035 0.0068   8413 p19       0.0059 8
4754 [Fe III] 0.0015 6       8467 p17       0.0090 13
4769 [Fe III] 0.0004 3       8502 p16       0.0101 15
4861 H $\beta $ 1. 1690   1. 964 8545 p15       0.0118 18
4881 [Fe III] 0.0020 20       8598 p14       0.0128 20
4959 [O III] 2.5446 2700       8665 p13       0.0161 25
5007 [O III] 7.62   4.08 7.44   8750 p12       0.0182 30
5056 Si II 0.0013 16       8863 p11       0.0284 40
5200 [N I] 0.0029 28       9015 p10       0.0408 50
5270 [Fe III] 0.0027 32       9069 [S III]       0.3007 300
5299 O I 0.0003 3       9229 p9       0.0455 57
5518 [Cl III] 0.0039 41       9473 He I       0.0065 7
5538 [Cl III] 0.0041 47       9532 [S III]abs       0.7456 400
5755 [N II] 0.0009 5 0.0040 0.0009   9850 [C I]       0.0015 2
5876 He I 0.1793 775 0.1384 0.1613 406 10057 p7       0.1083 125
F(H$\beta $)         4.06u                
c(H$\beta $)   0.65   0.29 0.52                
$N_{\rm e}$[S II] (cm-3) 2870   369 1710                
$N_{\rm e}$[Cl III] (cm-3) 3623                      
$N_{\rm e}$[Ar IV] (cm-3) 5840                      
$T_{\rm e}$ (K) [O III] 14 100   13 100 14 300                
$T_{\rm e}$ (K) [N II]               12 900   13 200 12 200  
Note. The E-W long slit centered on A crosses B in its northern part.
b As the line is affected by blending, an additional spectrum was obtained with a FWHM = 1.1 Å through the same slit width giving an
[Ar IV] $\lambda $4711/[Ar IV] $\lambda $4711+HeI $\lambda $4713 ratio of 0.47.
abs Since [SIII]$\lambda $9532 is affected by telluric absorption its intensity has been estimated from the intensity of $\lambda $9069 and taking into account
that the A value of $\lambda9532 = 0.0576$ and that the A value of $\lambda9069 = 0.0221$ (Mendoza 1983).
u In units of 10-12 ergs s-1 cm-2, the equivalent width of H($\beta $) is 415 Å.
91, 97 1991 and 1997 observations.

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