Hyperfine structure and isotope shift in Tl II with astrophysical applications
(1996) In Astrophysical Journal 462(2). p.943-947- Abstract
- Fourier transform (FT) spectra of Tl II with resolved hyperfine structure (hfs) have been analyzed in the region 1790-3400 Angstrom. Measured isotope shifts (IS) for two transitions, including the S-1-P-3 intercombination line to the ground state at 1908.6 Angstrom are reported. Accurate Ritz wavelengths for isotope and hyperfine components of the S-1-P-1 resonance line at 1321.6 Angstrom are given. The accuracy is better than 0.3 m Angstrom for measured wavelengths and better than 0.4 m Angstrom for the Ritz wavelengths. Theoretical multi-configuration Dirac-Fock (MCDF) calculations, including core polarization, show that the LS-allowed 1321.6 Angstrom transition is a factor of 30 stronger than the intercombination line at 1908.6... (More)
- Fourier transform (FT) spectra of Tl II with resolved hyperfine structure (hfs) have been analyzed in the region 1790-3400 Angstrom. Measured isotope shifts (IS) for two transitions, including the S-1-P-3 intercombination line to the ground state at 1908.6 Angstrom are reported. Accurate Ritz wavelengths for isotope and hyperfine components of the S-1-P-1 resonance line at 1321.6 Angstrom are given. The accuracy is better than 0.3 m Angstrom for measured wavelengths and better than 0.4 m Angstrom for the Ritz wavelengths. Theoretical multi-configuration Dirac-Fock (MCDF) calculations, including core polarization, show that the LS-allowed 1321.6 Angstrom transition is a factor of 30 stronger than the intercombination line at 1908.6 Angstrom. The application of the new Tl II data to astrophysical spectra obtained with the Hubble Space Telescope is discussed. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3919595
- author
- Johansson, Sveneric LU ; Kalus, Gabriele LU ; Brage, Tomas LU ; Leckrone, DS and Wahlgren, Glenn LU
- organization
- publishing date
- 1996
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- individual (chi Lupi), stars, atomic data, identification, line, ultraviolet
- in
- Astrophysical Journal
- volume
- 462
- issue
- 2
- pages
- 943 - 947
- publisher
- American Astronomical Society
- external identifiers
-
- wos:A1996UH18700035
- scopus:21344436308
- ISSN
- 0004-637X
- DOI
- 10.1086/177207
- language
- English
- LU publication?
- yes
- id
- df38ac15-dbcd-4e23-a694-94c86340b499 (old id 3919595)
- date added to LUP
- 2016-04-01 16:25:44
- date last changed
- 2024-01-11 07:55:20
@article{df38ac15-dbcd-4e23-a694-94c86340b499, abstract = {{Fourier transform (FT) spectra of Tl II with resolved hyperfine structure (hfs) have been analyzed in the region 1790-3400 Angstrom. Measured isotope shifts (IS) for two transitions, including the S-1-P-3 intercombination line to the ground state at 1908.6 Angstrom are reported. Accurate Ritz wavelengths for isotope and hyperfine components of the S-1-P-1 resonance line at 1321.6 Angstrom are given. The accuracy is better than 0.3 m Angstrom for measured wavelengths and better than 0.4 m Angstrom for the Ritz wavelengths. Theoretical multi-configuration Dirac-Fock (MCDF) calculations, including core polarization, show that the LS-allowed 1321.6 Angstrom transition is a factor of 30 stronger than the intercombination line at 1908.6 Angstrom. The application of the new Tl II data to astrophysical spectra obtained with the Hubble Space Telescope is discussed.}}, author = {{Johansson, Sveneric and Kalus, Gabriele and Brage, Tomas and Leckrone, DS and Wahlgren, Glenn}}, issn = {{0004-637X}}, keywords = {{individual (chi Lupi); stars; atomic data; identification; line; ultraviolet}}, language = {{eng}}, number = {{2}}, pages = {{943--947}}, publisher = {{American Astronomical Society}}, series = {{Astrophysical Journal}}, title = {{Hyperfine structure and isotope shift in Tl II with astrophysical applications}}, url = {{http://dx.doi.org/10.1086/177207}}, doi = {{10.1086/177207}}, volume = {{462}}, year = {{1996}}, }