Theoretical oscillator strengths in Pr III and application to some CP stars
P. Palmeri, P. Quinet, Y. Frémat, J.-F. Wyart and E. Biémont
Astrophys. J. Suppl. Ser. (in press, 1999)
A set of transition probabilities is obtained for the first time for many
transitions of Pr III of astrophysical interest. A relativistic Hartree-Fock
method, combined with a least-squares fitting of the available experimental
levels, including a large number of newly determined values, has been used
for the calculations in which configuration interaction and core-polarization
effects have been introduced. The interest of the new data set is illustrated
by considering the chemical composition of the chemically peculiar (CP)
stars HD101065 (Przybylski's star) and HD141556 (Chi Lupi).
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