Emergent O VIII / N VII Spectrum

• A hypothetical medium containing only O VIII, N VII, and some unspecified form of background continuum ( = 10-5). An abundance ratio of O/N = 5 is assumed.

  • At  = 100, the higher-order lines are almost completely suppressed, while the Ly lines are still unaffected.
  • At  = 1000, fluorescence scattering is important, and some of the O VIII Ly lines are converted to the N VII Lyman, Balmer, etc. lines. ~33% of this radiation escape as Ly photons.
  • At  = 104, most of the O VIII Ly line is destroyed