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Article Contents
1 Introduction
2 The TMC brown dwarf sample
3 X-ray variability analysis of the TMC brown dwarfs
4 X-ray spectral properties of the TMC brown dwarfs
5 X-ray luminosities of the XEST brown dwarfs compared to the XEST low-mass stars
6 X-ray fractional luminosity and H$\alpha $ emission of the XEST brown dwarfs
7 Comparison of brown dwarf X-ray fractional luminosities in the XEST and COUP
8 Discussion
9 Summary
Online Material
Appendix A: Log and data reduction of Chandra observations
Appendix B: Quiescent X-ray light curves of the TMC BDs
Appendix C: Degeneracy of the quantile diagram

List of tables
List of figures

Copyright ESO 2007
Published by EDP Sciences