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The behaviour of Li abundance in the stars of different metallicities

hal.structure.identifierAstronomical observatory of Odessa National University [Odessa]
dc.contributor.authorMISHENINA, T. V.
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
dc.contributor.authorSOUBIRAN, C.
dc.date.issued2005
dc.date.conference2005
dc.description.abstractEnUsing 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.
dc.language.isoen
dc.source.titleFrom Lithium to Uranium: Elemental Tracers of Early Cosmic 2005IAUS..228...97M - Evolution, IAU Symposium Proceedings of the international Astronomical Union 228
dc.title.enThe behaviour of Li abundance in the stars of different metallicities
dc.typeCommunication dans un congrès
dc.identifier.doi10.1017/S1743921305005338
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
bordeaux.page97-98
bordeaux.volume228
bordeaux.countryFR
bordeaux.title.proceedingFrom Lithium to Uranium: Elemental Tracers of Early Cosmic 2005IAUS..228...97M - Evolution, IAU Symposium Proceedings of the international Astronomical Union 228
bordeaux.conference.cityParis
bordeaux.peerReviewedoui
hal.identifierhal-00403556
hal.version1
hal.invitednon
hal.proceedingsoui
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00403556v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=From%20Lithium%20to%20Uranium:%20Elemental%20Tracers%20of%20Early%20Cosmic%202005IAUS..228...97M%20-%20Evolution,%20IAU%20Symposium%20Proceedings%20of%20the%20internatio&rft.date=2005&rft.volume=228&rft.spage=97-98&rft.epage=97-98&rft.au=MISHENINA,%20T.%20V.&SOUBIRAN,%20C.&rft.genre=unknown


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