Modification of AGB wind in a binary system

Details Modification of AGB wind in a binary system Modification of AGB wind in a binary system

2000-02-25

arxiv.org/abs/astro-ph/0002486v1

Astronomy and Astrophysics

Astrophysics

4 pages, 5 figures. To appear in ``Asymmetrical Planetary Nebulae II: from Origins to Microstructures,'' ASP Conference Series

Scientific paper

We explore one of plausible causes of asymmetry in the wind of an AGB star - the presence of a binary companion. We have developed a simple method for estimating the intrinsic non-sphericity of the outflow in that case. Assuming the Roche model, local stellar parameters (T_eff, g) are calculated, and then a formula for the local mass loss rate is applied. As a by-product a relation between the ratio of stellar radius to the Roche lobe radius and the overall wind enhancement is obtained.

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