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Radiative accelerations and atomic data requirements

Published online by Cambridge University Press:  13 January 2006

G. Alecian ,
O. Richard ,
S. Vauclair  and
G. Alecian
G. Alecian*
Affiliation:
LUTH (Observatoire de Paris – CNRS), Observatoire de Meudon, 92195 Meudon Cedex, France
*
[email protected]
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Abstract

Radiative accelerations are crucial quantities to study element diffusion instars. They strongly depend on atomic properties of ions in a way more or lesssimilar to opacities or synthetic spectra. Computations of radiativeaccelerations however have also some specific requirements which make them verysensitive to the quality of atomic data. We shall present various aspects of theradiative accelerations computations and discuss, through examples, how they areso closely related to the knowledge of atomic data.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 17: Element Stratification in Stars: 40 Years of Atomic Diffusion , 2005 , pp. 33 - 42
Copyright
© EAS, EDP Sciences, 2005

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