Table 6: IUE spectrum of NGC 6153.
$\lambda $ Ion Intensities   Ratio
(Å)   (1) (2)   (3)
1240 N V 1.6 23.0   0.30
1248 C III 1.2 17.0   0.22
1293 O VI 2.3 23.0   0.30
1334 C II 1.7 13.0   0.17
1344 C IV 2.0 15.0   0.20
1371 O VI* 1.7 10.0   0.14
1401 Si IV 1.7 9.4   0.12
1410 Si II 2.2 12.0   0.16
1425 O VI 1.5 8.2   0.11
1486 N IV $\leq$1.0 $\leq$4.4   $\leq$0.057
1550 C IV* abs      
1640 He II 16.9 67.6   0.88
1663 O III] $\leq$0.3 $\leq$1.1   $\leq$0.014
1750 N III] 3.7 12.3   0.16
1762 C II $\leq$0.3 $\leq$1.1   $\leq$0.014
1776 Fe II 1.2 4.0   0.052
1883 Si III] 0.4: 1.5:   0.020:
1892 Si III] 0.5: 1.9:   0.027:
1909 C III] 7.7 30.8   0.401
2070 O VI 10.3 93.7   1.31
2424 [Ne IV] 1.8 6.07   0.085
2733 He II 1.2 1.25   0.018
2836 O III 5.5 4.68   0.065
3047 O III 5.3 3.29   0.046
3132 O III 39.8 21.9   0.306
3170 C II? 10.9 5.8   0.081
3186 Si II 3.9 2.05   0.029
3203 He II 6.4 3.23   0.045
(1) I(line) measured - all intensity units 10-14 erg cm-2 s-1;
(2) I(line) extinction corrected - all intensity units 10-12 erg cm-2 s-1;
(3) I(line)/I(H$\beta $) after correction for diaphragm size and extinction.
* These stellar lines show P Cygni profiles. The O V absorption has an equivalent
width of 4.5 Å and the C IV of 0.82 Å.

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