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dc.contributor.author
Llorente De Andrés, F.
dc.contributor.author
Chavero, Carolina Andrea
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dc.contributor.author
De La Reza, R.
dc.contributor.author
Roca Fàbrega, S.
dc.contributor.author
Cifuentes, C.
dc.date.available
2022-02-25T19:18:30Z
dc.date.issued
2021-10
dc.identifier.citation
Llorente De Andrés, F.; Chavero, Carolina Andrea; De La Reza, R.; Roca Fàbrega, S.; Cifuentes, C.; The evolution of lithium in FGK dwarf stars: The lithium-rotation connection and the Li desert; EDP Sciences; Astronomy and Astrophysics; 654; 10-2021; 1-13
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/152774
dc.description.abstract
We investigate two topics regarding solar mass FGK-type stars, the lithium-rotation connection (LRC), and the existence of the 'lithium desert'. We determine the minimum critical rotation velocity (v sin i), related with the LRC separating slow from rapid stellar rotators, to be 5 km s-1. This value also splits different stellar properties. For the first time we explore the behaviour of the LRC for some stellar associations with ages between 45 Myr and 120 Myr. This allows us to study the LRC age dependence at the beginning of the general spin-down stage for low-mass stars, which starts at ∼30-40 Myr. We find that each stellar group presents a characteristic minimum lithium depletion connected to a specific high rotation velocity and that this minimum changes with age. For instance, the minimum changes from ∼50 km s-1 to less than 20 km s-1 in 200 Myr. This desert was described as a limited region in the A(Li)-Teff map containing no stars. Using Teff from Gaia DR2 we detect 30 stars inside and/or near the same box originally defined as the lithium desert. Due to their intrinsic Teff errors some of these stars may be inside or outside the box, implying to a high probability that the box contains several stars. This leads us to consider that the lithium desert appears to be more a statistical distribution fluctuation than a real problem. We conclude that the lithium desert is rather due to a statistical distribution fluctuation than a real physical problem.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
EDP Sciences
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
STARS: ABUNDANCES
dc.subject
STARS: ROTATION
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STARS: SOLAR-TYPE
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
The evolution of lithium in FGK dwarf stars: The lithium-rotation connection and the Li desert
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-02-22T16:37:35Z
dc.identifier.eissn
1432-0746
dc.journal.volume
654
dc.journal.pagination
1-13
dc.journal.pais
Francia
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dc.journal.ciudad
París
dc.description.fil
Fil: Llorente De Andrés, F.. Ateneo de Almagro; España. Consejo Superior de Investigaciones Científicas. Centro de Astrobiología; España
dc.description.fil
Fil: Chavero, Carolina Andrea. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
dc.description.fil
Fil: De La Reza, R.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
dc.description.fil
Fil: Roca Fàbrega, S.. Universidad Complutense de Madrid; España
dc.description.fil
Fil: Cifuentes, C.. Consejo Superior de Investigaciones Científicas. Centro de Astrobiología; España
dc.journal.title
Astronomy and Astrophysics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2021/10/aa41339-21/aa41339-21.html
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361/202141339
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/2108.05852
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