3D hydrodynamical and radiative transfer modeling of Eta Carinae's colliding winds
Abstract
We present results of full 3D hydrodynamical and radiative transfer simulations of the colliding stellar winds in the massive binary system Eta Carinae. We accomplish this by applying the SimpleX algorithm for 3D radiative transfer on an unstructured Voronoi-Delaunay grid to recent 3D smoothed particle hydrodynamics (SPH) simulations of the binary colliding winds. We use SimpleX to obtain detailed ionization fractions of hydrogen and helium, in 3D, at the resolution of the original SPH simulations. We investigate several computational domain sizes and Luminous Blue Variable primary star mass-loss rates. We furthermore present new methods of visualizing and interacting with output from complex 3D numerical simulations, including 3D interactive graphics and 3D printing. While we initially focus on Eta Car, the methods employed can be applied to numerous other colliding wind (WR 140, WR 137, WR 19) and dusty 'pinwheel' (WR 104, WR 98a) binary systems. Coupled with 3D hydrodynamical simulations, SimpleX simulations have the potential to help determine the regions where various observed time-variable emission and absorption lines form in these unique objects.
Keywords
Cite
@article{arxiv.1508.03861,
title = {3D hydrodynamical and radiative transfer modeling of Eta Carinae's colliding winds},
author = {Thomas I. Madura and Nicola Clementel and Theodore R. Gull and Chael J. H. Kruip and Jan-Pieter Paardekooper and Vincent Icke},
journal= {arXiv preprint arXiv:1508.03861},
year = {2015}
}
Comments
3 pages, to appear in conference proceedings of the International Workshop on Wolf-Rayet Stars, Potsdam, Germany, 1 - 5 June 2015, Editors W.-R. Hamann, A. Sander, and H. Todt