Gasdynamical Simulations of the Large and Little Homunculus Nebulae of η Carinae

  title={Gasdynamical Simulations of the Large and Little Homunculus Nebulae of $\eta$ Carinae},
  author={Ricardo F. Gonz'alez and E. Gouveia dal Pino and Alejandro C. Raga and Pablo F. Vel'azquez},
  journal={The Astrophysical Journal},
Here we present two-dimensional, time-dependent radiatively cooling hydrodynamical simulations of the large and little Homunculus nebulae around η Carinae. We employ an alternative scenario to previous interacting stellar wind models that is supported by both theoretical and observational evidence, where a nonspherical outburst wind (with a latitudinal velocity dependence that matches the observations of the large Homunculus), which is expelled for 20 years, interacts with a preeruptive slow… Expand

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