The abundances of Pt, Au, and HG in the chemically peculiar HgMn-type stars kappa CANCRI and chi LUPI
(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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3918975
- author
- Wahlgren, Glenn LU ; Leckrone, DS ; Johansson, SG ; Rosberg, M and Brage, Tomas LU
- publishing date
- 1995
- 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
- American Astronomical Society
- external identifiers
-
- wos:A1995QV08000041
- scopus:11944257583
- 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
- 2016-04-01 16:54:57
- date last changed
- 2021-05-23 04:38:20
@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}}, keywords = {{CANCRI; INDIVIDUAL (KAPPA; ABUNDANCES; CHEMICALLY PECULIAR; STARS; CHI LUPI); ULTRAVIOLET; SPECTRA}}, language = {{eng}}, number = {{1}}, pages = {{438--451}}, publisher = {{American Astronomical Society}}, 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}}, doi = {{10.1086/175618}}, volume = {{444}}, year = {{1995}}, }