Abstract
Radiative opacity is an important quantity in the modeling of stellar
structure and evolution. In the present work we recall the role of opacity in
the interpretation of pulsations of different kinds of stars. The detailed
opacity code SCO-RCG for local-thermodynamic-equilibrium (LTE) plasmas is
described, as well as the OPAMCDF project dedicated to the spectroscopy of LTE
and non-LTE plasmas. Interpretations, with the latter codes, of several laser
and Z pinch experiments in conditions relevant to astrophysical applications
are also presented and our work in progress as concerns the internal solar
conditions is illustrated.
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