Table 4: Dereddened line intensity ratios with respect to I(H$\beta $) = 100 for the three brightest star-forming bursts observed in Mkn 1087: the center of Mkn 1087 (C), the north companion galaxy (N) and the intense burst #7. All have been observed both with 4.2 m WHT and 2.5 m INT. Correction for underlying stellar absorption in H I Balmer lines has been also applied.
Line f($\lambda $) C WHT C INT N WHT N INT #7 WHT #7 INT
3726 [O II] 0.27 206 $\pm$ 11a 226 $\pm$ 13a 155 $\pm$ 12 325 $\pm$ 26a 85.5 $\pm$ 7.1 212 $\pm$ 20a
3729 [O II] 0.27 ... ... 231 $\pm$ 14 ... 106 $\pm$ 8 ...
3869 [Ne III] 0.23 8.3 $\pm$ 2.9 8.7 $\pm$ 3.3 43.4 $\pm$ 6.9 37.8 $\pm$ 9.1 9.9 $\pm$ 3.6 17.1 $\pm$ 6.2
3889 He I+H8 0.22 13.8 $\pm$ 4.3 7.6 $\pm$ 2.6 ... ... 15.0 $\pm$ 4.3 15.6 $\pm$ 4.6
3968 [Ne III] 0.21 9.7 $\pm$ 3.5 3.54: ... ... 11.0 $\pm$ 3.6 13.2 $\pm$ 3.7
4068 [S II] 0.19 2.23: ... ... ... ... ...
4076 [S II] 0.19 1.13: ... ... ... ... ...
4101 H$\delta$ 0.18 25.9 $\pm$ 4.3 25.9 $\pm$ 4.6 25.9 $\pm$ 4.8 25.9 $\pm$ 7.7 25.9 $\pm$ 4.4 25.9 $\pm$ 4.7
4340 H$\gamma$ 0.135 46.9 $\pm$ 4.7 46.9 $\pm$ 5.2 46.9 $\pm$ 7.2 46.9 $\pm$ 8.8 46.9 $\pm$ 8.1 46.9 $\pm$ 9.8
4363 [O III] 0.13 1.76: ... ... ... ... 1.85:
4471 He I 0.10 2.14: 3.90 $\pm$ 1.5 ... ... 3.23: ...
4861 H$\beta $ 0.00 100 $\pm$ 5 100 $\pm$ 6 100 $\pm$ 5 100 $\pm$ 7 100 $\pm$ 5 100 $\pm$ 6
4959 [O III] -0.02 32.2 $\pm$ 2.3 33.9 $\pm$ 2.7 78.2 $\pm$ 5.4 124 $\pm$ 7 69.0 $\pm$ 5.5 57.7 $\pm$ 6.1
5007 [O III] -0.03 97.4 $\pm$ 5.9 109 $\pm$ 7 218 $\pm$ 10 375 $\pm$ 19 201 $\pm$ 12 161 $\pm$ 10
5016 He I -0.03 1.18: ... ... ... ... ...
5200 [N I] -0.05 ... 2.97 $\pm$ 0.79 ... ... ... ...
5518 [Cl III] -0.17 ... 0.94: ... ... ... ...
5876 He I -0.23 10.3 $\pm$ 1.2 11.1 $\pm$ 1.9 12.6 $\pm$ 2.2 14.5 $\pm$ 2.4 10.3 $\pm$ 1.3 12.6 $\pm$ 1.9
6300 [O I] -0.30 6.73 $\pm$ 0.60 7.56 $\pm$ 0.76 19.1 $\pm$ 3.0 9.7 $\pm$ 2.2 4.55 $\pm$ 0.79 4.9 $\pm$ 1.9
6364 [O I] -0.31 1.83: 1.77: ... ... 1.41: ...
6548 [N II] -0.34 31.4 $\pm$ 2.7 31.5 $\pm$ 3.3 8.0 $\pm$ 1.7 9.4 $\pm$ 3.3 14.2 $\pm$ 1.9 14.9 $\pm$ 2.2
6563 H$\alpha $ -0.34 286 $\pm$ 11 286 $\pm$ 12 286 $\pm$ 12 286 $\pm$ 14 286 $\pm$ 12 286 $\pm$ 14
6584 [N II] -0.34 102.2 $\pm$ 6.4 98.1 $\pm$ 8.8 22.6 $\pm$ 2.7 22.8 $\pm$ 4.1 43.1 $\pm$ 3.0 46.5 $\pm$ 5.4
6678 He I -0.35 1.84: ... ... 10.3 $\pm$ 2.9 2.09: ...
6716 [S II] -0.36 42.9 $\pm$ 3.8 43.8 $\pm$ 3.9 48.7 $\pm$ 4.9 34.8 $\pm$ 4.3 31.0 $\pm$ 3.4 32.0 $\pm$ 5.7
6731 [S II] -0.36 36.0 $\pm$ 2.9 35.1 $\pm$ 4.2 37.4 $\pm$ 4.1 27.4 $\pm$ 3.6 23.7 $\pm$ 2.2 26.4 $\pm$ 2.9


a [O II] $\lambda\lambda$3726,3729 emission flux.


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