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Astron. Astrophys. 357, 920-930 (2000)

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Preliminary spectroscopic analysis of the "spotted" roAp star HD 83368 in the Li I 6708 Å region *

N.S. Polosukhina 1, A.V. Shavrina 2, M. Hack 3, V. Khalack 2, V. Tsymbal 4 and P. North 5

1 Crimean Astrophysical Observatory (CRAO) (polo@crao.crimea.ua)
2 Main Astronomical Observatory of National Academy of Sciences, Ukraine, Kiev 252650, Ukraine (shavrina,khalack@mao.kiev.ua)
3 Department of Astronomy, Trieste University, Via Tiepolo 11, 34131 Trieste, Italy (hack@ts.astro.it)
4 Tavrian National University, Yaltinskaya st.4, Simpheropol 330000, Ukraine (VAD@ccssu.crimea.ua)
5 Inst. d'Astronomie, Univ. Lausanne, 1290 Chavannes-des-Bois, Switzerland (Pierre.North@obs.unige.ch)

Received 25 May 1999 / Accepted 20 March 2000

Abstract

The preliminary determination of the atmospheric chemical composition of the Li "spotted" roAp star HD 83368 has been obtained by the synthetic spectrum method. The locations of two lithium spots are determined by the procedure of "mapping", based on the Doppler line shifts for different rotation phases.

Key words: stars: abundances – stars: chemically peculiar – stars: individual: HD 83368 – stars: magnetic fields – stars: starspots

* Based on observations collected at the European Southern Observatory, La Silla, Chile

Send offprint requests to: A.V. Shavrina

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© European Southern Observatory (ESO) 2000

Online publication: June 5, 2000
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