Comparison of New Experimental and Astrophysical F-values For Some Ru-ii Lines, Observed In Hst Spectra of Chi-lupi
Författare
Summary, in English
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.
Avdelning/ar
Publiceringsår
1994
Språk
Engelska
Sidor
809-815
Publikation/Tidskrift/Serie
Astrophysical Journal
Volym
421
Issue
2
Fulltext
- Available as PDF - 305 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