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dc.contributor.authorCarlos, Marília Gabriela Cardoso Corrêapt_BR
dc.contributor.authorMeléndez, Jorgept_BR
dc.contributor.authorSpina, Lorenzopt_BR
dc.contributor.authorSantos, Leonardo Augusto Gonçalves dospt_BR
dc.contributor.authorBedell, Meganpt_BR
dc.contributor.authorRamírez, Ivánpt_BR
dc.contributor.authorAsplund, Martinpt_BR
dc.contributor.authorBean, Jacob L.pt_BR
dc.contributor.authorYong, Davidpt_BR
dc.contributor.authorGalarza, Jhon Joel Yanapt_BR
dc.contributor.authorAlves-Brito, Alanpt_BR
dc.date.accessioned2019-09-04T02:35:09Zpt_BR
dc.date.issued2019pt_BR
dc.identifier.issn0035-8711pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/198766pt_BR
dc.description.abstractThis work aims to examine in detail the depletion of lithium in solar twins to better constrain stellar evolution models and investigate its possible connection with exoplanets. We employ spectral synthesis in the region of the asymmetric 6707.75 Å Li I line for a sample of 77 stars plus the Sun. As in previous works based on a smaller sample of solar twins, we find a strong correlation between Li depletion and stellar age. In addition, for the first time we show that the Sun has the lowest Li abundance in comparison with solar twins at similar age (4.6 ± 0.5 Gyr). We compare the lithium content with the condensation temperature slope for a subsample of the best solar twins and determine that the most lithium-depleted stars also have fewer refractory elements. We speculate whether the low lithium content in the Sun might be related to the particular configuration of our Solar system.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofMonthly notices of the royal astronomical society. Oxford. Vol. 485, no. 3 (May 2019), p. 4052–4059pt_BR
dc.rightsOpen Accessen
dc.subjectLítiopt_BR
dc.subjectTechniques: spectroscopicen
dc.subjectEvolucao estelarpt_BR
dc.subjectSun: abundancesen
dc.subjectSistemas planetáriospt_BR
dc.subjectStars: abundancesen
dc.subjectStars: evolutionen
dc.subjectSolpt_BR
dc.subjectPlanetary systemsen
dc.subjectStars: solar-typeen
dc.titleThe Li–age correlation: the Sun is unusually Li deficient for its agept_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001099001pt_BR
dc.type.originEstrangeiropt_BR


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