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The abundances of Pt, Au, and HG in the chemically peculiar HgMn-type stars kappa CANCRI and chi LUPI

Wahlgren, Glenn LU ; Leckrone, DS; Johansson, SG; Rosberg, M and Brage, Tomas LU (1995) In Astrophysical Journal 444(1). p.438-451
Abstract
Echelle mode spectra obtained with the Goddard High Resolution Spectrograph onboard the Hubble Space Telescope have been used to determine the abundances of the heavy elements Pt, Au, and Hg in the chemically peculiar HgMn-type stars kappa Cancri and chi Lupi. The abundances were determined by fitting observed line profiles with synthetically generated spectra and are found to be enhanced relative to solar system values by between three and five orders of magnitude in both stars. The Hg isotope mixture in kappa Cancri is found to resemble the terrestrial mixture while that of chi Lupi is dominated by the heaviest isotope. As determined from multiple ionization states, the abundances place constraints upon theories attempting to explain the... (More)
Echelle mode spectra obtained with the Goddard High Resolution Spectrograph onboard the Hubble Space Telescope have been used to determine the abundances of the heavy elements Pt, Au, and Hg in the chemically peculiar HgMn-type stars kappa Cancri and chi Lupi. The abundances were determined by fitting observed line profiles with synthetically generated spectra and are found to be enhanced relative to solar system values by between three and five orders of magnitude in both stars. The Hg isotope mixture in kappa Cancri is found to resemble the terrestrial mixture while that of chi Lupi is dominated by the heaviest isotope. As determined from multiple ionization states, the abundances place constraints upon theories attempting to explain the large surficial abundances of heavy elements. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
CANCRI, INDIVIDUAL (KAPPA, ABUNDANCES, CHEMICALLY PECULIAR, STARS, CHI LUPI), ULTRAVIOLET, SPECTRA
in
Astrophysical Journal
volume
444
issue
1
pages
438 - 451
publisher
University of Chicago Press
external identifiers
  • wos:A1995QV08000041
ISSN
0004-637X
DOI
10.1086/175618
language
English
LU publication?
no
id
c4e4ade7-ec83-4e66-9b67-bc0b8da4ee80 (old id 3918975)
date added to LUP
2013-07-08 14:36:55
date last changed
2016-06-29 08:55:38
@article{c4e4ade7-ec83-4e66-9b67-bc0b8da4ee80,
  abstract     = {Echelle mode spectra obtained with the Goddard High Resolution Spectrograph onboard the Hubble Space Telescope have been used to determine the abundances of the heavy elements Pt, Au, and Hg in the chemically peculiar HgMn-type stars kappa Cancri and chi Lupi. The abundances were determined by fitting observed line profiles with synthetically generated spectra and are found to be enhanced relative to solar system values by between three and five orders of magnitude in both stars. The Hg isotope mixture in kappa Cancri is found to resemble the terrestrial mixture while that of chi Lupi is dominated by the heaviest isotope. As determined from multiple ionization states, the abundances place constraints upon theories attempting to explain the large surficial abundances of heavy elements.},
  author       = {Wahlgren, Glenn and Leckrone, DS and Johansson, SG and Rosberg, M and Brage, Tomas},
  issn         = {0004-637X},
  keyword      = {CANCRI,INDIVIDUAL (KAPPA,ABUNDANCES,CHEMICALLY PECULIAR,STARS,CHI LUPI),ULTRAVIOLET,SPECTRA},
  language     = {eng},
  number       = {1},
  pages        = {438--451},
  publisher    = {University of Chicago Press},
  series       = {Astrophysical Journal},
  title        = {The abundances of Pt, Au, and HG in the chemically peculiar HgMn-type stars kappa CANCRI and chi LUPI},
  url          = {http://dx.doi.org/10.1086/175618},
  volume       = {444},
  year         = {1995},
}