Accurate LTE abundances for some lambda Boo stars
Astrophysics
2007-05-23 v1
Abstract
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.
Cite
@article{arxiv.astro-ph/9805226,
title = {Accurate LTE abundances for some lambda Boo stars},
author = {S. M. Andrievsky and I. V. Chernyshova and V. G. Klochkova and V. E. Panchuk},
journal= {arXiv preprint arXiv:astro-ph/9805226},
year = {2007}
}
Comments
3 pages, no figure, to appear in: Proc. of the 26th workshop of the European Working Group on CP stars, eds. P. North, A. Schnell and J. Ziznovsky, Contrib. Astr. Obs. Skalnate Pleso Vol. 27, No 3