Gallium abundances in mercury-manganese stars

Details Gallium abundances in mercury-manganese stars Gallium abundances in mercury-manganese stars

1998-05-14

arxiv.org/abs/astro-ph/9805188v1

Astronomy and Astrophysics

Astrophysics

3 pages, 1 figure, to appear in: Proc. of the 26th workshop of the European Working Group on CP stars, eds. P. North, A. Schne

Scientific paper

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.

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