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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 ; 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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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
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2020-01-12 20:57:40
@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/ws/files/5352074/2297426.pdf},
  doi          = {10.1086/177788},
  volume       = {469},
  year         = {1996},
}