Publication Abstracts

White et al. 1976

White, R.E., A.H. Vaughan, Jr., G.W. Preston, and J.P. Swings, 1976: Isotopic abundances of HG in mercury stars inferred from HG II λ3984. Astrophys. J., 204, 131-140, doi:10.1086/154157.

Wavelengths of Hg II λ3984 in 30 Hg stars are distributed uniformly from the value for the terrestrial mix to a value that corresponds to nearly pure 204Hg. The wavelengths are correlated loosely with effective temperatures inferred from Q(UBV). Relative isotopic abundances derived from partially resolved profiles of λ3984 in ι CrB, χ Lup, and HR 4072 suggest that mass-dependent fractionation has occurred in all three stars. We suggest that such fractionation occurs in all Hg stars. Accordingly, we present scheme whereby isotopic compositions can be inferred from a comparison of stellar wavelengths and equivalent widths with those calculated for a family of fractionated isotopic mixes. Theoretical profiles calculated for the derived isotopic composition agree well with high-resolution interferometric profiles obtained for three of the stars.

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BibTeX Citation

@article{wh07000g,
  author={White, R. E. and Vaughan, Jr., A. H. and Preston, G. W. and Swings, J. P.},
  title={Isotopic abundances of HG in mercury stars inferred from HG II λ3984},
  year={1976},
  journal={Astrophys. J.},
  volume={204},
  pages={131--140},
  doi={10.1086/154157},
}

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RIS Citation

TY  - JOUR
ID  - wh07000g
AU  - White, R. E.
AU  - Vaughan, A. H., Jr.
AU  - Preston, G. W.
AU  - Swings, J. P.
PY  - 1976
TI  - Isotopic abundances of HG in mercury stars inferred from HG II λ3984
JA  - Astrophys. J.
VL  - 204
SP  - 131
EP  - 140
DO  - 10.1086/154157
ER  -

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