Advanced

The laboratory analysis of Bi II and its application to the Bi-rich HgMn star HR 7775

Dolk, Linus LU ; Litzén, Ulf LU and Wahlgren, Glenn LU (2002) In Astronomy & Astrophysics 388(2). p.692-703
Abstract
The bismuth spectrum emitted from a hollow cathode discharge has been recorded with a Fourier Transform Spectrometer (FTS). Accurate wavelengths have been determined for 104 lines, and several new energy levels have been found, while the accuracy of previously known level energies have been improved. The hyperfine structure of all observed lines has been analyzed, yielding hyperfine constants A and B for 56 levels. With the aid of the laboratory measurements the optical region spectrum of the HgMn star HR 7775 has been studied for all observable lines. The wavelengths and hfs constants established from the laboratory work have been combined with theoretical gf values to identify spectral lines and make an abundance estimation of bismuth.... (More)
The bismuth spectrum emitted from a hollow cathode discharge has been recorded with a Fourier Transform Spectrometer (FTS). Accurate wavelengths have been determined for 104 lines, and several new energy levels have been found, while the accuracy of previously known level energies have been improved. The hyperfine structure of all observed lines has been analyzed, yielding hyperfine constants A and B for 56 levels. With the aid of the laboratory measurements the optical region spectrum of the HgMn star HR 7775 has been studied for all observable lines. The wavelengths and hfs constants established from the laboratory work have been combined with theoretical gf values to identify spectral lines and make an abundance estimation of bismuth. It has been established that bismuth is present in HR 7775 at an enhancement level of approximately 5 orders of magnitude relative to the meteoritic abundance, consistent with previous observations in the ultraviolet region of this star. Astrophysical gf values are presented for a number of lines. (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
Astronomy & Astrophysics
volume
388
issue
2
pages
692 - 703
publisher
EDP Sciences
external identifiers
  • wos:000176100000041
  • scopus:0036602174
ISSN
0004-6361
DOI
10.1051/0004-6361:20020573
language
English
LU publication?
yes
id
3974a025-8e8e-4e68-a8ad-e26178b85cd7 (old id 119273)
date added to LUP
2007-07-12 15:54:42
date last changed
2017-07-30 04:37:35
@article{3974a025-8e8e-4e68-a8ad-e26178b85cd7,
  abstract     = {The bismuth spectrum emitted from a hollow cathode discharge has been recorded with a Fourier Transform Spectrometer (FTS). Accurate wavelengths have been determined for 104 lines, and several new energy levels have been found, while the accuracy of previously known level energies have been improved. The hyperfine structure of all observed lines has been analyzed, yielding hyperfine constants A and B for 56 levels. With the aid of the laboratory measurements the optical region spectrum of the HgMn star HR 7775 has been studied for all observable lines. The wavelengths and hfs constants established from the laboratory work have been combined with theoretical gf values to identify spectral lines and make an abundance estimation of bismuth. It has been established that bismuth is present in HR 7775 at an enhancement level of approximately 5 orders of magnitude relative to the meteoritic abundance, consistent with previous observations in the ultraviolet region of this star. Astrophysical gf values are presented for a number of lines.},
  author       = {Dolk, Linus and Litzén, Ulf and Wahlgren, Glenn},
  issn         = {0004-6361},
  language     = {eng},
  number       = {2},
  pages        = {692--703},
  publisher    = {EDP Sciences},
  series       = {Astronomy & Astrophysics},
  title        = {The laboratory analysis of Bi II and its application to the Bi-rich HgMn star HR 7775},
  url          = {http://dx.doi.org/10.1051/0004-6361:20020573},
  volume       = {388},
  year         = {2002},
}