The abundances of Pt, Au, and HG in the chemically peculiar HgMn-type stars kappa CANCRI and chi LUPI
Author
Summary, in English
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.
Publishing year
1995
Language
English
Pages
438-451
Publication/Series
Astrophysical Journal
Volume
444
Issue
1
Document type
Journal article
Publisher
American Astronomical Society
Topic
- Astronomy, Astrophysics and Cosmology
Keywords
- CANCRI
- INDIVIDUAL (KAPPA
- ABUNDANCES
- CHEMICALLY PECULIAR
- STARS
- CHI LUPI)
- ULTRAVIOLET
- SPECTRA
Status
Published
ISBN/ISSN/Other
- ISSN: 0004-637X