Table 3: Diagnostic emission line ratios from the LSS spectra in logarithmic units.

No.
ratio Value

1
[O III $]~\lambda 5007$/H $\beta~\lambda 4861$ 0.48
2 [O I $]~\lambda 6300$/H $\alpha~\lambda6563$ -1.52
3 [N II $]~\lambda 6583$/H $\alpha~\lambda6563$ -1.69
4 [S II $]~\lambda 6716+~\lambda 6731$/H $\alpha~\lambda6563$ -0.93
5 [S II $]~\lambda 6716$/[S II $]~\lambda 6731$ 0.10
6 [O III $]~\lambda 4959+~\lambda 5007$/[O III $]~ \lambda 4363$ $\sim $2
7 H $\alpha~\lambda6563$/H $\beta~\lambda 4861$ 0.51


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