Advanced

The Lanthanide Elements in Stellar and Laboratory Spectra

Wahlgren, Glenn LU (2002) In Physica Scripta T100. p.22-36
Abstract
The lanthanide elements (Z=57?71) are characterized by the filling of the 4f electronic subshell, which lies close in energy to the 5d and 6s subshells. As a result, the lanthanide spectra can be quite complicated in terms of the number of optical spectral lines, and in some cases their hyperfine structure and isotopic shifts are extremely large. These characteristics have great implications for astronomical investigations. We first review the stellar environments in which study of the lanthanides is important. These include the sun, chemically peculiar stars, and the oldest, most metal-deficient stars of the galaxy. We then touch on laboratory efforts directed at improving atomic data useful in analyzing astronomical spectra, in... (More)
The lanthanide elements (Z=57?71) are characterized by the filling of the 4f electronic subshell, which lies close in energy to the 5d and 6s subshells. As a result, the lanthanide spectra can be quite complicated in terms of the number of optical spectral lines, and in some cases their hyperfine structure and isotopic shifts are extremely large. These characteristics have great implications for astronomical investigations. We first review the stellar environments in which study of the lanthanides is important. These include the sun, chemically peculiar stars, and the oldest, most metal-deficient stars of the galaxy. We then touch on laboratory efforts directed at improving atomic data useful in analyzing astronomical spectra, in particular regarding wavelengths, line structure and line strength. Special emphasis is placed on the first three spectra of these elements and a reference list of laboratory analyses is provided. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physica Scripta
volume
T100
pages
22 - 36
publisher
Institute of Physics Publishing Ltd.
external identifiers
  • wos:000177162500004
  • scopus:0036074036
ISSN
0031-8949
DOI
10.1238/Physica.Topical.100a00022
language
English
LU publication?
yes
id
8d2d4cda-3480-40dc-b9f5-634232229d09 (old id 119929)
date added to LUP
2007-07-20 14:34:15
date last changed
2017-01-01 04:37:23
@article{8d2d4cda-3480-40dc-b9f5-634232229d09,
  abstract     = {The lanthanide elements (Z=57?71) are characterized by the filling of the 4f electronic subshell, which lies close in energy to the 5d and 6s subshells. As a result, the lanthanide spectra can be quite complicated in terms of the number of optical spectral lines, and in some cases their hyperfine structure and isotopic shifts are extremely large. These characteristics have great implications for astronomical investigations. We first review the stellar environments in which study of the lanthanides is important. These include the sun, chemically peculiar stars, and the oldest, most metal-deficient stars of the galaxy. We then touch on laboratory efforts directed at improving atomic data useful in analyzing astronomical spectra, in particular regarding wavelengths, line structure and line strength. Special emphasis is placed on the first three spectra of these elements and a reference list of laboratory analyses is provided.},
  author       = {Wahlgren, Glenn},
  issn         = {0031-8949},
  language     = {eng},
  pages        = {22--36},
  publisher    = {Institute of Physics Publishing Ltd.},
  series       = {Physica Scripta},
  title        = {The Lanthanide Elements in Stellar and Laboratory Spectra},
  url          = {http://dx.doi.org/10.1238/Physica.Topical.100a00022},
  volume       = {T100},
  year         = {2002},
}