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Article Contents
1 Introduction: Multiplicity of brown dwarfs
2 Our targets: Cha H$\alpha $ 1 to 12
3 HST observation and data reduction
4 Ground-based imaging with VLT and NTT
5 Real companions or background objects?
6 The promising candidate near Cha H$\alpha $ 5
7 Is Cha H$\alpha $ 2 a close binary?
8 Discussion
References
Copyright ESO 2002
Published by EDP Sciences