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Abundances & Abundance Ratios in our Galaxy & the Local Group

Published online by Cambridge University Press:  01 December 2006

Eline Tolstoy
Eline Tolstoy*
Affiliation:
Kapteyn Astronomical Institute, University of Groningen, Postbus 800, 9700AV Groningen, the Netherlands
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Abstract

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This is a review of the progress of ESO/WFI Imaging and VLT/FLAMES spectroscopy of large numbers of individual stars in nearby dwarf spheroidal galaxies primarily by the Dwarf Abundances and Radial-velocities Team (DART). These observations have allowed us to show that neither the kinematics nor the abundance nor the spatial distributions are easy to explain in a straight forward manner for these smallest galaxies. The main result is that dwarf galaxies show complex and highly specific evolutionary and metal enrichment processes, especially at ancient times. This conclusively proves that these small galaxies are not the building blocks of the larger galaxies in the Local Group.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S241: Stellar Populations as Building Blocks of Galaxies , December 2006 , pp. 279 - 285
Copyright
Copyright © International Astronomical Union 2007

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