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Separation of gas and dust in the winds of AGB stars

Published online by Cambridge University Press:  30 December 2019

Lars Mattsson ,
Christer Sandin  and
Paolo Ventura
Lars Mattsson
Affiliation:
Nordita, Roslagstullsbacken 23, SE-106 91 Stockholm, Sweden email: lars.mattsson@nordita.org
Christer Sandin
Affiliation:
Nordita, Roslagstullsbacken 23, SE-106 91 Stockholm, Sweden email: lars.mattsson@nordita.org
Paolo Ventura
Affiliation:
INAF-Osservatorio Astronomico di Roma, Monteporzio, Italy
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Abstract

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We present first results from a project aiming at a better understanding of how gas and dust interact in dust-driven winds from Asymptotic Giant Branch (AGB) stars. We are at the final stage of developing a new parallelised radiation-hydrodynamics (RHD) code for AGB-wind modelling including a new generalised implementation of drift. We also discuss first results from high-resolution box simulations of forced turbulence intended to give quantitative “3D corrections” to dust-driven winds from AGB stars. It is argued that modelling of dust-driven winds of AGB stars is a problem that may need to be treated in a less holistic way, where some parts of the problem are treated separately in detailed simulations and are parameterised back into a less detailed (1D spherically symmetric) model describing the entire picture.

Keywords

stars: AGB and post-AGBstars: windsoutflowsstars: atmospheres
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S343: Why Galaxies Care About AGB Stars: A Continuing Challenge through Cosmic Time , August 2018 , pp. 462 - 463
Copyright
© International Astronomical Union 2019 

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