Experimental Pd II oscillator strengths and the palladium abundance in the HgMn-type star chi Lupi
Author
Summary, in English
Experimental oscillator strengths for 19 ultraviolet lines of Pd II have been derived from measurements of line intensities in calibrated Fourier transform spectra, combined with picosecond-pulse laser measurements of radiative lifetimes. Five of these 19 lines, in addition to other Pd nr lines, are present in Hubble Space Telescope/Goddard High-Resolution Spectrograph echelle spectra of the chemically peculiar HgMn star chi Lupi, yielding a palladium abundance of log (N-Pd) = +5.0, which is 3.3 dex above the solar abundance. Theoretical oscillator strengths have been calculated for all strong ultraviolet transitions associated with the lowest odd-parity configuration of Pd II.
Department/s
Publishing year
1996
Language
English
Pages
388-392
Publication/Series
Astrophysical Journal
Volume
469
Issue
1
Full text
- Available as PDF - 159 kB
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Document type
Journal article
Publisher
American Astronomical Society
Topic
- Atom and Molecular Physics and Optics
Status
Published
ISBN/ISSN/Other
- ISSN: 0004-637X