Fulltext

Light elements in stars with exoplanets

Mena, E. Delgado ; Gálvez-Ortiz, M. C. ; González-Hernández, J. I. ; Israelian, G. ; Santos, N. C. ; Rebolo, R. ; Cerdeña, C. Dominguez

In: Proceedings of the International Astronomical Union, 2009, vol. 5, no. S265, p. 430-431

Add to personal list
    Title
    • Light elements in stars with exoplanets
    Author
    • Mena, E. Delgado. Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain. email: edm@iac.es
    • Gálvez-Ortiz, M. C.. Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB, UK.
    • González-Hernández, J. I.. Departamento de Astrofísica, Facultad de Ciencias Físicas, Universidad Complutense de Madrid, E-28040, Spain.
    • Israelian, G.. Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain. email: edm@iac.es
    • Santos, N. C.. Centro de Astrofísica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal.
    • Rebolo, R.. Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain. email: edm@iac.es
    • Cerdeña, C. Dominguez. Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain. email: edm@iac.es
    Document Type
    • Postprint
    Language
    • English
    Published in
    • Proceedings of the International Astronomical Union, 2009, vol. 5, no. S265, p. 430-431. Cambridge University Press
    Other Version
    OAI-PMH Identifier
    • oai:doc.rero.ch:293290
    Summary
    Light elements are important tracers of the internal stellar structure and kinematics. Li and Be are both burned in the stellar interiors but Be requires much higher temperatures and thus we can expect to measure Be abundances in stars which have no detectable Li in their atmospheres. The study of these elements can give us information about processes related to the angular momentum history of these stars, since rotation and angular momentum loss are important mechanisms responsible for the depletion of light elements. Additionally, if pollution has played an important role in determining the high-metal content of planet host stars, we would expect to find a similar or even higher increase in the Li and Be contents. We present Be and Li abundances in a sample of 69 stars with planets and 31 stars without known planetary companion, spanning a large range of effective temperatures