Astron. Astrophys. 322, 709-718 (1997)

Acknowledgements

I am grateful to Andy Gould, John Bahcall and Chris Flynn for their permission to use the HST data, some of which is unpublished. I particularly wish to thank Andy Gould for useful discussions and for supplying the HST data in electronic form. I am also grateful to Didier Saumon for providing the zero-metallicity VLM star model predictions in electronic form, to Ben Moore for useful correspondences, and to David Valls-Gabaud for helpful discussions. This research is supported by a EC Maria Curie Training & Mobility of Researchers Fellowship.

© European Southern Observatory (ESO) 1997

Online publication: June 5, 1998

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