The Interaction of Planets and Brown Dwarfs with AGB Stellar Winds

Details The Interaction of Planets and Brown Dwarfs with AGB Stellar Winds The Interaction of Planets and Brown Dwarfs with AGB Stellar Winds

2010-12-15

arxiv.org/abs/1012.3469v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

Part of PlanetsbeyondMS/2010 proceedings http://arxiv.org/html/1011.6606v1, Proc. of the workshop on "Planetary Systems beyo

Scientific paper

Beyond the main sequence solar type stars undergo extensive mass loss, providing an environment where planet and brown dwarf companions interact with the surrounding material. To examine the interaction of substellar mass objects embedded in the stellar wind of an asymptotic giant branch (AGB) star, three dimensional hydrodynamical simulations at high resolution have been calculated utilizing the FLASH adaptive mesh refinement code. Attention is focused on the perturbation of the substellar mass objects on the morphology of the outflowing circumstellar matter. In particular, we determine the properties of the resulting spiral density wake as a function of the mass, orbital distance, and velocity of the object as well as the wind velocity and its sound velocity. Our results suggest that future observations of the spiral pattern may place important constraints on the properties of the unseen low mass companion in the outflowing stellar wind.

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