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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