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Abundances of Metal-Poor Stars and the Formation of the Halo

Published online by Cambridge University Press:  14 August 2015

R. Cayrel
R. Cayrel*
Affiliation:
Observatoire de Paris et C.N.R.S. (URA 335) 61, avenue de l’Observatoire 75014 Paris, France

Abstract

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The origin of the elements in the early Galaxy has been thought to be fairly well understood as primordial matter polluted by ejectae of type II supernovae. Some recent observational results have led to reconsider in more detail this statement. As a result, it is confirmed in some respects, but curiously, when the same metallicity can be found both in the halo and in the thick disk, the stars contaminated by SN la ejectae are more the halo stars than the thick disk stars.

Type
II. Joint Discussions
Information
Highlights of Astronomy , Volume 11 , Issue 1: Highlights of Astronomy. As presented at the XXIIIrd General Assembly of the IAU (Part A), 1997 , 1998 , pp. 62 - 65
Copyright
Copyright © Kluwer 1998

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