Radiative transfer in 3D model stellar atmospheres

Details Radiative transfer in 3D model stellar atmospheres Radiative transfer in 3D model stellar atmospheres

2003-02-20

arxiv.org/abs/astro-ph/0302408v1

Astronomy and Astrophysics

Astrophysics

Invited review at workshop on "3D Stellar Evolution", Livermore, July 2002 (12 pages)

Scientific paper

Recently 3D hydrodynamical simulations of stellar surface convection have become feasible thanks to advances in computer technology and efficient numerical algorithms. Available observational diagnostics indicate that these models are highly realistic in describing the topology of stellar granulation and for spectral line formation purposes. The traditional free parameters (mixing length parameters, micro- and macroturbulence) always inherent in standard 1D analyses have thus finally become obsolete. These 3D models can therefore both shed light on the elusive nature of stellar convection as well as be employed in element abundance analyses. In the present contribution we will describe some aspects of the models and possible applications of them in terms of radiative transfer.

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