Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003mnras.346..433x&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 346, Issue 2, pp. 433-440.
Astronomy and Astrophysics
Astronomy
8
Atomic Data, Atomic Processes, Stars: Chemically Peculiar
Scientific paper
Radiative lifetime measurements were performed with time-resolved laser-induced fluorescence techniques for 24 levels of NdII in the energy range 20 500-32 500 cm-1. For 17 levels, no previous experimental data exist. These results have allowed the testing of new theoretical calculations with the relativistic Hartree-Fock method taking configuration interactions and core-polarization effects into account, and a satisfying agreement has been found for this complex ion. A new set of calculated oscillator strengths, accurate within a few per cent for the strongest transitions, is presented for 107 lines of astrophysical interest appearing in the wavelength range 358.0-1100.0 nm. These results will be useful to evaluate abundance values of neodymium in chemically peculiar stars in relation with cosmochronology.
Biémont É.
Cowan Robert D.
Lefèbvre P.-H.
Quinet Pascal
Svanberg Sune
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