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Astron. Astrophys. 341, 560-566 (1999) AcknowledgementsI thank Drs. M. Salaris, P. Podsiadlowski and J. Drew for discussions regarding this work, and also the referee, A. Maeder, for constructive comments on the paper. JMP is supported by a PPARC postdoctoral research assistantship. ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 1999 Online publication: December 4, 1998 ![]() |