3D radiative transfer simulations of Eta Carinae's inner colliding winds – I. Ionization structure of helium at apastron

  title={3D radiative transfer simulations of Eta Carinae's inner colliding winds – I. Ionization structure of helium at apastron},
  author={Nicola Clementel and Thomas I. Madura and Chael J.H. Kruip and Jan-Pieter Paardekooper and Theodore R. Gull},
  journal={Monthly Notices of the Royal Astronomical Society},
The highly eccentric binary system Eta Carinae (Eta Car) shows numerous time-variable emission and absorption features. These observational signatures are the result of interactions between the complex three-dimensional (3D) wind-wind collision regions and photoionization by the luminous stars. Specifically, helium presents several interesting spectral features that provide important clues on the geometry and physical proprieties of the system and the individual stars. We use the SIMPLEX… 

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