Gallium abundances in mercury-manganese stars

There is a widespread assertion in the literature that the optical Ga lines give much higher abundances than the UV lines. We have determined Ga abundances in HgMn stars taking the observed hyperfine structure of the optical Ga II lines into account. This reduces these abundances to within 0.2 dex o...

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Bibliographic Details
Published in:arXiv.org 1998-05
Main Authors: Dworetsky, M M, Jomaron, C M, Smith, C A
Format: Article
Language:English
Subjects:
Gallium
Hyperfine structure
Manganese
Peculiar stars
Resonance lines
Online Access:Get full text
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Summary:There is a widespread assertion in the literature that the optical Ga lines give much higher abundances than the UV lines. We have determined Ga abundances in HgMn stars taking the observed hyperfine structure of the optical Ga II lines into account. This reduces these abundances to within 0.2 dex of the values from the resonance lines.
ISSN:2331-8422