Lithium abundances in exoplanet-hosts stars

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dc.creatorCastro, M.
dc.creatorVauclair, S.
dc.creatorRichard, O.
dc.creatorSantos, N. C.
dc.date2008-03-20
dc.date.accessioned2026-07-07T09:27:40Z
dc.date.available2026-07-07T09:27:40Z
dc.descriptionExoplanet-host stars (EHS) are known to present surface chemical abundances different from those of stars without any detected planet (NEHS). EHS are, on the average, overmetallic compared to the Sun. The observations also show that, for cool stars, lithium is more depleted in EHS than in NEHS. The overmetallicity of EHS may be studied in the framework of two different scenarii. We have computed main sequence stellar models with various masses, metallicities and accretion rates. The results show different profiles for the lithium destruction according to the scenario. We compare these results to the spectroscopic observations of lithium.
dc.description4 pages, 5 figures, conference proceeding "XXI Century challenges for stellar evolution", Cefalu (Sicily, Italy), August 29 - September 2, 2007
dc.identifierhttps://arxiv.org/abs/0803.3014
dc.identifierhttp://arxiv.org/abs/0803.3014
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/157184
dc.subjectAstrophysics
dc.titleLithium abundances in exoplanet-hosts stars
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