Experimental Pd II oscillator strengths and the palladium abundance in the HgMn-type star chi Lupi

Hans Lundberg; S. G Johansson; Jörgen Larsson; D. S Leckrone; U Litzen; Sune Svanberg; G. M Wahlgren; R Zerne

doi:10.1086/177788

Experimental Pd II oscillator strengths and the palladium abundance in the HgMn-type star chi Lupi

Hans Lundberg, S. G Johansson, Jörgen Larsson, D. S Leckrone, U Litzen, Sune Svanberg, G. M Wahlgren, R Zerne

Atomfysik

Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

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Sammanfattning

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.

Originalspråk	engelska
Sidor (från-till)	388-392
Tidskrift	Astrophysical Journal
Volym	469
Nummer	1
DOI	https://doi.org/10.1086/177788
Status	Published - 1996

Ämnesklassifikation (UKÄ)

Atom- och molekylfysik och optik

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10.1086/177788

Lundberg1996

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@article{cb2cb60ecf8949479f101cb8c61dc0ec,

title = "Experimental Pd II oscillator strengths and the palladium abundance in the HgMn-type star chi Lupi",

abstract = "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.",

author = "Hans Lundberg and Johansson, {S. G} and J{\"o}rgen Larsson and Leckrone, {D. S} and U Litzen and Sune Svanberg and Wahlgren, {G. M} and R Zerne",

year = "1996",

doi = "10.1086/177788",

language = "English",

volume = "469",

pages = "388--392",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

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TY - JOUR

T1 - Experimental Pd II oscillator strengths and the palladium abundance in the HgMn-type star chi Lupi

AU - Lundberg, Hans

AU - Johansson, S. G

AU - Larsson, Jörgen

AU - Leckrone, D. S

AU - Litzen, U

AU - Svanberg, Sune

AU - Wahlgren, G. M

AU - Zerne, R

PY - 1996

Y1 - 1996

N2 - 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.

AB - 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.

U2 - 10.1086/177788

DO - 10.1086/177788

M3 - Article

SN - 0004-637X

VL - 469

SP - 388

EP - 392

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

ER -

Experimental Pd II oscillator strengths and the palladium abundance in the HgMn-type star chi Lupi

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