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The effect of scattering on the temperature stratification of 3d model atmospheres of metal-poor red giants

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Date

2010

Authors

Collet, Remo
Hayek, Wolfgang
Asplund, Martin

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Research Projects

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Abstract

We study the effects of different approximations of scattering in 3D radiationhydrodynamics simulations on the photospheric temperature stratification of metal-poor red giant stars. We find that assuming a Planckian source function and neglecting the contribution of scattering to extinction in optically thin layers provides a good approximation of the effects of coherent scattering on the photospheric temperature balance.

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Keywords

Convection, Hydrodynamics, Methods: numerical, Radiative transfer, Scattering, Stars: atmospheres

Citation

URI

https://hdl.handle.net/1885/733798894

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ANU Research Publications

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Type

Conference paper

Book Title

Astrophysical Dynamics: From Stars to Galaxies

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Publication

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DOI

10.1017/S1743921311017856

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