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Lifetime measurements for ground term transitions in TaII, WII, and ReII

Henderson, M; Irving, RE; Matulioniene, R; Curtis, LJ; Ellis, DG; Wahlgren, GM and Brage, Tomas LU (1999) In Astrophysical Journal 520(2). p.805-810
Abstract
Lifetime measurements have been made for the radiation emitted in the ground term transitions of the nominal form 5s(2)5p(6)5d(x)6s-5s(2)5p(6)5d(x)6p in Ta II (x = 3), W II (x = 4), and Re II (x = 5). Supporting theoretical calculations have also been performed to characterize configuration interaction and to estimate the degree of decay branching of the upper levels. The lifetime measurements have been combined with these theoretical considerations and with branching fractions deduced from the emission measurements of Corliss & Bozman to specify the oscillator strengths of these transitions. The results are discussed in the context of spectroscopic data obtained from orbiting telescopes and applied to Hubble Space Telescope spectra to... (More)
Lifetime measurements have been made for the radiation emitted in the ground term transitions of the nominal form 5s(2)5p(6)5d(x)6s-5s(2)5p(6)5d(x)6p in Ta II (x = 3), W II (x = 4), and Re II (x = 5). Supporting theoretical calculations have also been performed to characterize configuration interaction and to estimate the degree of decay branching of the upper levels. The lifetime measurements have been combined with these theoretical considerations and with branching fractions deduced from the emission measurements of Corliss & Bozman to specify the oscillator strengths of these transitions. The results are discussed in the context of spectroscopic data obtained from orbiting telescopes and applied to Hubble Space Telescope spectra to estimate the tungsten abundance in Sirius. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ultraviolet : stars, stars : peculiar, Lupi), chi, stars : individual (Sirius B, atomic data, stars : abundances
in
Astrophysical Journal
volume
520
issue
2
pages
805 - 810
publisher
University of Chicago Press
external identifiers
  • wos:000081540600040
  • scopus:0033441041
ISSN
0004-637X
DOI
10.1086/307485
language
English
LU publication?
yes
id
1790a9b9-e12f-49c6-84c3-ce42191f0b18 (old id 3919438)
date added to LUP
2013-07-09 07:56:54
date last changed
2017-01-01 06:59:16
@article{1790a9b9-e12f-49c6-84c3-ce42191f0b18,
  abstract     = {Lifetime measurements have been made for the radiation emitted in the ground term transitions of the nominal form 5s(2)5p(6)5d(x)6s-5s(2)5p(6)5d(x)6p in Ta II (x = 3), W II (x = 4), and Re II (x = 5). Supporting theoretical calculations have also been performed to characterize configuration interaction and to estimate the degree of decay branching of the upper levels. The lifetime measurements have been combined with these theoretical considerations and with branching fractions deduced from the emission measurements of Corliss & Bozman to specify the oscillator strengths of these transitions. The results are discussed in the context of spectroscopic data obtained from orbiting telescopes and applied to Hubble Space Telescope spectra to estimate the tungsten abundance in Sirius.},
  author       = {Henderson, M and Irving, RE and Matulioniene, R and Curtis, LJ and Ellis, DG and Wahlgren, GM and Brage, Tomas},
  issn         = {0004-637X},
  keyword      = {ultraviolet : stars,stars : peculiar,Lupi),chi,stars : individual (Sirius B,atomic data,stars : abundances},
  language     = {eng},
  number       = {2},
  pages        = {805--810},
  publisher    = {University of Chicago Press},
  series       = {Astrophysical Journal},
  title        = {Lifetime measurements for ground term transitions in TaII, WII, and ReII},
  url          = {http://dx.doi.org/10.1086/307485},
  volume       = {520},
  year         = {1999},
}