Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Theoretical oscillator strengths for Sr II and Y III, with application to abundances in the HgMn-type star chi Lupi

Brage, Tomas LU ; Wahlgren, Glenn LU ; Johansson, Sveneric LU ; Leckrone, DS and Proffitt, CR (1998) In Astrophysical Journal 496(2). p.1051-1057
Abstract
Oscillator strengths for selected transitions of Sr II and Y III have been determined using ab initio multiconfiguration Hartree-Fock techniques. The importance of including an accurate treatment of the core-valence correlation is emphasized. The results are used to determine the abundances of Sr and Y in the chemically peculiar star chi Lupi from HST/GHRS Echelle spectra. Overabundances of 2.09 dex for Sr and 2.8 dex for Y relative to the solar abundance are derived, and an ionization imbalance of +1.1 dex is evident from abundance determinations using Y III and Y II.
Please use this url to cite or link to this publication:
author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
atomic data, abundances, stars, individual (chi Lupi)
in
Astrophysical Journal
volume
496
issue
2
pages
1051 - 1057
publisher
American Astronomical Society
external identifiers
  • wos:000073048100041
  • scopus:0001711824
ISSN
0004-637X
DOI
10.1086/305401
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Lund Observatory (000006111), Science (000006100), Physics, science (011013100)
id
18306a42-0294-433b-93f3-5dfe0dd20fa5 (old id 3919525)
date added to LUP
2016-04-01 16:42:24
date last changed
2022-01-28 21:34:02
@article{18306a42-0294-433b-93f3-5dfe0dd20fa5,
  abstract     = {{Oscillator strengths for selected transitions of Sr II and Y III have been determined using ab initio multiconfiguration Hartree-Fock techniques. The importance of including an accurate treatment of the core-valence correlation is emphasized. The results are used to determine the abundances of Sr and Y in the chemically peculiar star chi Lupi from HST/GHRS Echelle spectra. Overabundances of 2.09 dex for Sr and 2.8 dex for Y relative to the solar abundance are derived, and an ionization imbalance of +1.1 dex is evident from abundance determinations using Y III and Y II.}},
  author       = {{Brage, Tomas and Wahlgren, Glenn and Johansson, Sveneric and Leckrone, DS and Proffitt, CR}},
  issn         = {{0004-637X}},
  keywords     = {{atomic data; abundances; stars; individual (chi Lupi)}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{1051--1057}},
  publisher    = {{American Astronomical Society}},
  series       = {{Astrophysical Journal}},
  title        = {{Theoretical oscillator strengths for Sr II and Y III, with application to abundances in the HgMn-type star chi Lupi}},
  url          = {{http://dx.doi.org/10.1086/305401}},
  doi          = {{10.1086/305401}},
  volume       = {{496}},
  year         = {{1998}},
}