lambda3984 feature in the mercury-manganese stars
Journal Article
·
· Publ. Astron. Soc. Pac., v. 87, no. 518, pp. 513-521
OSTI ID:4141476
The isotopic shift of the Hg II lambda3984 line is examined in the spectra of a number of strong mercury-manganese stars; the shift cannot be explained by line blending with lines of other elements in these stars, but represents real isotopic variations. An astrophysical log gf value of -1.8 is derived for lambda3984, based on the Hg I lambda4358 line strength in iota CrB and HR 1800. Elemental and (in some cases) isotopic abundances of Hg are derived using a spectrum synthesis technique; overabundances of up to 5.4 dex over the solar system mercury abundance are found; the maximum overabundances may be temperature dependent. (auth)
- Research Organization:
- Dominion Astrophysical Observatory, Victoria, B.C.
- NSA Number:
- NSA-33-001519
- OSTI ID:
- 4141476
- Journal Information:
- Publ. Astron. Soc. Pac., v. 87, no. 518, pp. 513-521, Journal Name: Publ. Astron. Soc. Pac., v. 87, no. 518, pp. 513-521; ISSN PASPA
- Country of Publication:
- United States
- Language:
- English
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