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Article Contents
1 Introduction
2 Observations and data reduction
3 Velocity dispersion measurements
4 Line-strength indices
5 The index-velocity dispersion relations
6 Differences in the line-strength indices between LDEG s and HDEG s
7 The relation between [$\alpha $/Fe] and age
8 Conclusions
Online Material
Appendix A: Comparison with the Lick library
Appendix B: Comparison of stars in different runs
Appendix C: Velocity dispersion corrections for line-strengths
Appendix D: Comparison with other authors

List of tables
List of figures

Copyright ESO 2006
Published by EDP Sciences