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Lithium-Beryllium-Boron and Oxygen in the Early Galaxy

Published online by Cambridge University Press:  30 March 2016

Elisabeth Vangioni-Flam  and
Michel Cassé
Elisabeth Vangioni-Flam
Affiliation:
Institut d’Astrophysique de Paris, CNRS, 98 bis Boulevard Arago, 75014: Paris, France
Michel Cassé
Affiliation:
Service d’Astrophysique, DAPNIA, CEA Orme des Merisiers, 91191 Gif sur Yvette, CEDEX, FranceandInstitut d’Astrophysique de Paris, CNRS, 98 bis Boulevard Arago, 75014, Paris, France

Abstract

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Oxygen is a much better evolutionary index than iron to follow the history of Lithium-Beryllium-Boron (LiBeB) since it is the main producer of these light elements at least in the early Galaxy. The O-Fe relation is crucial to the determination of the exact physical process responsible for the LiBeB production. Calculated nucleosynthetic yields of massive stars, estimates of the energy cost of Be production, and above all recent observations reported in this meeting seem to favor a mechanism in which fast nuclei enriched in He, C and O arising from supernovae are accelerated in superbubbles and fragment on H and He in the interstellar medium.

Type
II. Joint Discussions
Information
Highlights of Astronomy , Volume 12: Highlights of Astronomy. As presented at the XXIVth General Assembly of the IAU, 2000 , 2002 , pp. 442 - 444
Copyright
Copyright © Astronomical Society of Pacific 2002

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