Some Concerns About the Reliability of LTE Abundance Analyses in Cool, Active Stars
Morel, Thierry[Osservatorio Astronomico di Palermo G. S. Vaiana, Istituto Nazionale di Astrofisica > > > >]
Micela, G.[Osservatorio Astronomico di Palermo G. S. Vaiana, Istituto Nazionale di Astrofisica]
Favata, F.[Astrophysics Division â Research and Science Support Department of ESA, ESTEC]
Chemical Abundances and Mixing in Stars in the Milky Way and its Satellites, ESO ASTROPHYSICS SYMPOSIA. ISBN 978-3-540-34135-2. Springer-Verlag, 2006, p. 64
[en] We discuss recent observational evidence illustrating the current limitations plaguing classical LTE abundance analyses of cool (T [SUB]eff[/SUB] < 5500 K), chromospherically active stars. Although significant progress on this issue can be evidently expected from a more realistic atmospheric modelling and treatment of NLTE line formation, a homogeneous abundance study of a large sample of inactive K-type stars may also prove valuable in disentangling temperature and activity effects.