Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-01-09
Astronomy and Astrophysics
Astrophysics
13 pages, LaTeX, 7 figures, newpasp.sty. To appear in the proceedings of the IAU Symposium 210 "Modelling of Stellar Atmospher
Scientific paper
We present the results of the observations of some roAp stars made at Mount Stromlo Observatory during 17 nights in 2001 September-October. This long observing run permitted us to obtain a good phase-rotation coverage. In chemically peculiar magnetic stars, the Li I 6708 A spectral line presents very anomalous behaviour: in some stars it is a strong feature, in others, with similar atmospheric parameters, it is invisible. Interesting results were obtained for the roAp star HD 3980 which presents variations of the profile and position of the Li I line with the rotation period. These new observational results should serve as a base for the development of atmospheric models of ``Li-spotted'' roAp stars.
Drake Natalia A.
Hack Margherita
la Reza Ramiro de
Polosukhina N. S.
Shavrina Angelina V.
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