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Discussion D: Observational problems with Li, Be and B

Published online by Cambridge University Press:  23 April 2010

Poul Erik Nissen
Poul Erik Nissen*
Affiliation:
Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark email: [email protected]
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Abstract

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In Discussion D the following problems were addressed: Has 6Li really been detected in the atmospheres of metal-poor halo stars? Is there a downward trend or increased scatter of Li abundances in stars on the ‘Li-plateau’ at metallicities [Fe/H] ≲ −2.5? Are there significant differences of Li abundances in main-sequence, turn-off, and sub-giant stars in globular clusters? Is the Li abundance in solar-type stars related to the presence of planets? How does the Be abundance in dwarf stars increase with the heavy-element abundance, and is there a cosmic scatter in Be at a given [Fe/H]? The discussion of these problems is summarized and some suggestions for future observational and theoretical studies are mentioned.

Keywords

stars: abundancesatmospheresinteriors – planetary systems – ISM: abundances – early universe
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S268: Light Elements in the Universe , November 2009 , pp. 493 - 497
Copyright
Copyright © International Astronomical Union 2010

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