...de-excited
If we make the assumptions that the
excitation conditions in both the NLR and the ILR are the same and that in
the ILR, tex2html_wrap_inline$$5007tex2html_wrap_inline$/$Htex2html_wrap_inline$$ tex2html_wrap_inline$$ 1, the O IIItex2html_wrap_inline$$5007 line is collisionaly
de-excited by about a factor 10. According to the formula given by
Seaton (1975), this implies a density of 1-310tex2html_wrap_inline$^6$ cmtex2html_wrap_inline$^-3$ if the
electronic temperature is in the range 1-310tex2html_wrap_inline$^4$ K.
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...kms-1
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