Astron. Astrophys. 342, 717-735 (1999)

Acknowledgements

We thank Reinhard Mundt for sharing spectra with us. We are grateful to Pat Hartigan for his calculations and valuable criticism of an earlier version of the manuscript, and to Tom Ray, Sergei Lamzin and J.A. Rodriguez-Gasper for useful comments and suggestions.

© European Southern Observatory (ESO) 1999

Online publication: February 23, 1999
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