MISHENINA, T. V.; SOUBIRAN, C.

doi:10.1017/S1743921305005338

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MISHENINA, T. V.
Astronomical observatory of Odessa National University [Odessa]

SOUBIRAN, C.
Observatoire aquitain des sciences de l'univers [OASU]
Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]

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From Lithium to Uranium: Elemental Tracers of Early Cosmic 2005IAUS..228...97M - Evolution, IAU Symposium Proceedings of the international Astronomical Union 228, From Lithium to Uranium: Elemental Tracers of Early Cosmic 2005IAUS..228...97M - Evolution, IAU Symposium Proceedings of the international Astronomical Union 228, 2005, Paris. 2005, vol. 228, p. 97-98

Resumen en inglés

Using the method of spectral synthesis we derived the abundances of Li in the atmospheres of 100 stars in the range of metallicities ‑3{[Fe/H]{0.2. The investigated spectra are part of the library collected at the Haute Provence Observatory, they were obtained with the 193 cm telescope equipped with ELODIE spectrometer (R=42000). For the metal-poor dwarfs, in the "Spite plateau" region ([Fe/H]{‑1.7, Teff{>}5700 K) we obtain logA(Li){=}2.30{±}0.05, which is in a good agreement with the results of other authors. Our values of Li abundances do not indicate any trends either with Teff or with [Fe/H]. The "plateau" is also traced in the metallicity range ‑0.7{[Fe/H]{‑0.3. The behavior of the lithium abundance for stars with [Fe/H]{>}‑1.7, Teff{5700 K shows a depleting mechanism in these stars, the growth of its efficiency with an increase of the metallicity. The "lithium plateau" was also found for thick disk dwarfs with Teff}{>}5800 K.< Leer menos

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The behaviour of Li abundance in the stars of different metallicities

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