Theoretical oscillator strengths for Sr II and Y III, with application to abundances in the HgMn-type star chi Lupi
(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:
https://lup.lub.lu.se/record/3919525
- author
- Brage, Tomas LU ; Wahlgren, Glenn LU ; Johansson, Sveneric LU ; Leckrone, DS and Proffitt, CR
- organization
- publishing date
- 1998
- 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
- 2024-01-11 13:12:17
@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}}, }