Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

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 orcid ; 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.
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Astrophysical Journal
volume
421
issue
2
pages
809 - 815
publisher
American Astronomical Society
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
2016-04-01 15:52:51
date last changed
2021-01-03 07:42:33
@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    = {{American Astronomical Society}},
  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          = {{https://lup.lub.lu.se/search/files/4501302/2297308.pdf}},
  doi          = {{10.1086/173693}},
  volume       = {{421}},
  year         = {{1994}},
}