Bibcode
Delgado Mena, E.; Gálvez-Ortiz, M. C.; González-Hernández, J. I.; Israelian, G.; Santos, N. C.; Rebolo, R.; Domínguez-Cerdeña, C.
Referencia bibliográfica
Chemical Abundances in the Universe: Connecting First Stars to Planets, Proceedings of the International Astronomical Union, IAU Symposium, Volume 265, p. 430-431
Advertised on:
3
2010
Número de citas
0
Número de citas referidas
0
Descripción
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.