Aspherical Dust Envelopes Around Oxygen-Rich AGB Stars

Abstract

We model the aspherical dust envelopes around O-rich AGB stars. We perform the radiative transfer model calculations for axisymmetric dust distributions. We simulate what could be observed from the aspherical dust envelopes around O-rich AGB stars by presenting the model spectral energy distributions and images at various wavelengths for different optical depths and viewing angles. The model results are very different from the ones with spherically symmetric geometry.

Keywords

• circumstellar matter
• stars: AGB and post-AGB
• infrared: stars
• dust: extinction
• radiative transfer