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Comparison of New Experimental and Astrophysical F-values For Some Ru-ii Lines, Observed In Hst Spectra of Chi-lupi

Johansson, S. G; Joueizadeh, A; Litzén, Ulf LU ; Larsson, Jörgen LU ; Persson, Anders LU ; Wahlström, Claes-Göran LU ; Svanberg, Sune LU ; Leckrone, D. S and Wahlgren, G. M (1994) In Astrophysical Journal 421(2). p.809-815
Abstract
We report on experimental absolute oscillator strengths for 18 UV lines of Ru II, obtained by combining laser-induced fluorescence measurements of radiative lifetimes and branching fractions from line intensities in a calibrated Fourier-transform spectrum. HST/GHRS observations of the spectrum of the sharp-lined B star chi Lupi contain six of these lines, for which ''astrophysical'' relative f-values have been determined. The agreement is within 0.10 dex for a Ru abundance of log N(Ru)/N(H) = -7.90, which is 2.3 dex above the solar abundance.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Astrophysical Journal
volume
421
issue
2
pages
809 - 815
publisher
University of Chicago Press
external identifiers
  • scopus:12044258047
ISSN
0004-637X
DOI
10.1086/173693
language
English
LU publication?
yes
id
4589a2d6-8487-4812-ac56-a4b0b3bbc3a9 (old id 2258505)
date added to LUP
2012-02-20 21:17:21
date last changed
2017-01-01 06:49:22
@article{4589a2d6-8487-4812-ac56-a4b0b3bbc3a9,
  abstract     = {We report on experimental absolute oscillator strengths for 18 UV lines of Ru II, obtained by combining laser-induced fluorescence measurements of radiative lifetimes and branching fractions from line intensities in a calibrated Fourier-transform spectrum. HST/GHRS observations of the spectrum of the sharp-lined B star chi Lupi contain six of these lines, for which ''astrophysical'' relative f-values have been determined. The agreement is within 0.10 dex for a Ru abundance of log N(Ru)/N(H) = -7.90, which is 2.3 dex above the solar abundance.},
  author       = {Johansson, S. G and Joueizadeh, A and Litzén, Ulf and Larsson, Jörgen and Persson, Anders and Wahlström, Claes-Göran and Svanberg, Sune and Leckrone, D. S and Wahlgren, G. M},
  issn         = {0004-637X},
  language     = {eng},
  number       = {2},
  pages        = {809--815},
  publisher    = {University of Chicago Press},
  series       = {Astrophysical Journal},
  title        = {Comparison of New Experimental and Astrophysical F-values For Some Ru-ii Lines, Observed In Hst Spectra of Chi-lupi},
  url          = {http://dx.doi.org/10.1086/173693},
  volume       = {421},
  year         = {1994},
}