Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...421..809j&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 421, no. 2, p. 809-815
Astronomy and Astrophysics
Astronomy
22
Astronomical Spectroscopy, Atomic Spectra, Line Spectra, Ruthenium, Spaceborne Astronomy, Stellar Composition, Ultraviolet Astronomy, Ultraviolet Spectra, Abundance, Hubble Space Telescope, Spectrographs, Ultraviolet Spectroscopy
Scientific paper
We report an experimental absolute oscillator strengths for 18 UV lines of Ru II, obtained by combining laser-induced flourescence measurements of radiative lifetimes and branching fractions from line intensities in a calibrated Fourier-transform spectrum Hubble Space Telescope/Goddard High Resolution Spectrograph (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.
Johansson Sveneric G.
Joueizadeh A. A.
Larsson Jorgen
Leckrone David S.
Litzén Ulf
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