Simulations of Quasi-Periodic Shells in Dust Forming AGB Winds

Details Simulations of Quasi-Periodic Shells in Dust Forming AGB Winds Simulations of Quasi-Periodic Shells in Dust Forming AGB Winds

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001assl..265..121s&link_type=abstract

Post-AGB Objects as a Phase of Stellar Evolution, Proceedings of the Toruń Workshop held July 5-7, 2000. Edited by R. Szczerba a

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

We present a numerical code for time dependent, two-fluid hydrodynamics applied to dust driven winds on the AGB. Our calculations include gas chemistry, grain nucleation and growth, and a new implementation of the viscous momentum transfer between grains and gas, based on microscopic dynamics. This allows us to perform calculations in which no assumptions about the completeness of momentum coupling are made. Here, we present the first results of the hydro code, which are based on an input model for the object IRC+10216 (Winters et al. 1994). We find that the periodic shells which are observed around IRC+10216 (Mauron & Huggins 1999, 2000) may have a hydrodynamic origin.

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