Accurate LTE abundances for some lambda Boo stars

Details Accurate LTE abundances for some lambda Boo stars Accurate LTE abundances for some lambda Boo stars

1998-05-18

arxiv.org/abs/astro-ph/9805226v1

Astronomy and Astrophysics

Astrophysics

3 pages, no figure, to appear in: Proc. of the 26th workshop of the European Working Group on CP stars, eds. P. North, A. Schn

Scientific paper

High-resolution and high S/N CCD spectra were analyzed to determine accurate LTE abundances in four lambda Boo stars: pi^1 Ori, 29 Cyg, HR 8203 and 15 And. In general, 14 chemical elements were investigated. The main results are the following: all stars have a strong deficiency of the majority of investigated metals. Oxygen exhibits a moderate deficiency. The carbon abundance is close to the solar one. The results obtained support an accretion/diffusion model, which is currently adopted for the explanation of the lambda Boo phenomenon.

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