Experimental Pd II oscillator strengths and the palladium abundance in the HgMn-type star chi Lupi
Författare
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.
Avdelning/ar
Publiceringsår
1996
Språk
Engelska
Sidor
388-392
Publikation/Tidskrift/Serie
Astrophysical Journal
Volym
469
Issue
1
Fulltext
- Available as PDF - 159 kB
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Dokumenttyp
Artikel i tidskrift
Förlag
American Astronomical Society
Ämne
- Atom and Molecular Physics and Optics
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0004-637X