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Experimental Pd II oscillator strengths and the palladium abundance in the HgMn-type star chi Lupi
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- Lundberg, Hans (author)
- Lund University,Lunds universitet,Atomfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Atomic Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
- Johansson, S. G (author)
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- Larsson, Jörgen (author)
- Lund University,Lunds universitet,Atomfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Atomic Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Leckrone, D. S (author)
- Litzen, U (author)
- Wahlgren, G. M (author)
- Zerne, R (author)
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- (creator_code:org_t)
- American Astronomical Society, 1996
- 1996
- English.
- In: Astrophysical Journal. - : American Astronomical Society. - 0004-637X .- 1538-4357. ; 469:1, s. 388-392
- Journal article (peer-reviewed)
Abstract
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- 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
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- Lundberg, Hans
- Johansson, S. G
- Larsson, Jörgen
- Leckrone, D. S
- Litzen, U
- Svanberg, Sune
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- Wahlgren, G. M
- Zerne, R
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