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Experimental Pd II oscillator strengths and the palladium abundance in the HgMn-type star chi Lupi

Lundberg, Hans LU ; Johansson, S. G ; Larsson, Jörgen LU orcid ; Leckrone, D. S ; Litzen, U ; Svanberg, Sune LU ; Wahlgren, G. M and Zerne, R (1996) In Astrophysical Journal 469(1). p.388-392
Abstract
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.
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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Astrophysical Journal
volume
469
issue
1
pages
388 - 392
publisher
American Astronomical Society
external identifiers
  • scopus:21444441637
ISSN
0004-637X
DOI
10.1086/177788
language
English
LU publication?
yes
id
cb2cb60e-cf89-4947-9f10-1cb8c61dc0ec (old id 2258884)
date added to LUP
2016-04-04 09:32:33
date last changed
2022-01-29 18:21:45
@article{cb2cb60e-cf89-4947-9f10-1cb8c61dc0ec,
  abstract     = {{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.}},
  author       = {{Lundberg, Hans and Johansson, S. G and Larsson, Jörgen and Leckrone, D. S and Litzen, U and Svanberg, Sune and Wahlgren, G. M and Zerne, R}},
  issn         = {{0004-637X}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{388--392}},
  publisher    = {{American Astronomical Society}},
  series       = {{Astrophysical Journal}},
  title        = {{Experimental Pd II oscillator strengths and the palladium abundance in the HgMn-type star chi Lupi}},
  url          = {{https://lup.lub.lu.se/search/files/5352074/2297426.pdf}},
  doi          = {{10.1086/177788}},
  volume       = {{469}},
  year         = {{1996}},
}