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Transition probabilities and lifetimes in neutral and singly ionized osmium and the Solar osmium abundance

Quinet, P; Palmeri, P; Biemont, E; Jorissen, A; Van Eck, S; Svanberg, Sune LU ; Xu, Huailiang LU and Plez, B (2006) In Astronomy & Astrophysics 448(3). p.93-1207
Abstract
Radiative lifetime measurements have been performed, with a time-resolved laser-induced fluorescence technique, for 12 levels of Os I and for 9 levels of Os II. For 9 levels of Os I and 4 levels of Os II, there were no previous experimental data available. From a comparison with new theoretical calculations, taking configuration interactions and core-polarization effects into account, it has been possible to deduce oscillator strengths for 129 transitions of Os I and 137 transitions of Os II of astrophysical interest appearing in the wavelength range 180.0-870.0 nm. These results have allowed us to revise the abundance of osmium in the solar photosphere (log epsilon(Os) = 1.25 +/- 0.11). The newly derived oscillator strengths have been... (More)
Radiative lifetime measurements have been performed, with a time-resolved laser-induced fluorescence technique, for 12 levels of Os I and for 9 levels of Os II. For 9 levels of Os I and 4 levels of Os II, there were no previous experimental data available. From a comparison with new theoretical calculations, taking configuration interactions and core-polarization effects into account, it has been possible to deduce oscillator strengths for 129 transitions of Os I and 137 transitions of Os II of astrophysical interest appearing in the wavelength range 180.0-870.0 nm. These results have allowed us to revise the abundance of osmium in the solar photosphere (log epsilon(Os) = 1.25 +/- 0.11). The newly derived oscillator strengths have been applied as well to derive the osmium abundance in the carbon-rich metal-poor star HD 187861. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Sun : abundances, atomic data, atomic processes
in
Astronomy & Astrophysics
volume
448
issue
3
pages
93 - 1207
publisher
EDP Sciences
external identifiers
  • wos:000235777800042
  • scopus:33646849467
ISSN
0004-6361
DOI
10.1051/0004-6361:20053852
language
English
LU publication?
yes
id
3bcae7bf-06d3-4f90-a844-55e94012d2d1 (old id 416979)
date added to LUP
2007-10-14 18:16:31
date last changed
2019-02-20 08:29:37
@article{3bcae7bf-06d3-4f90-a844-55e94012d2d1,
  abstract     = {Radiative lifetime measurements have been performed, with a time-resolved laser-induced fluorescence technique, for 12 levels of Os I and for 9 levels of Os II. For 9 levels of Os I and 4 levels of Os II, there were no previous experimental data available. From a comparison with new theoretical calculations, taking configuration interactions and core-polarization effects into account, it has been possible to deduce oscillator strengths for 129 transitions of Os I and 137 transitions of Os II of astrophysical interest appearing in the wavelength range 180.0-870.0 nm. These results have allowed us to revise the abundance of osmium in the solar photosphere (log epsilon(Os) = 1.25 +/- 0.11). The newly derived oscillator strengths have been applied as well to derive the osmium abundance in the carbon-rich metal-poor star HD 187861.},
  author       = {Quinet, P and Palmeri, P and Biemont, E and Jorissen, A and Van Eck, S and Svanberg, Sune and Xu, Huailiang and Plez, B},
  issn         = {0004-6361},
  keyword      = {Sun : abundances,atomic data,atomic processes},
  language     = {eng},
  number       = {3},
  pages        = {93--1207},
  publisher    = {EDP Sciences},
  series       = {Astronomy & Astrophysics},
  title        = {Transition probabilities and lifetimes in neutral and singly ionized osmium and the Solar osmium abundance},
  url          = {http://dx.doi.org/10.1051/0004-6361:20053852},
  volume       = {448},
  year         = {2006},
}