We thank Dr. M. Rayet to have kindly informed us of the up-to-date reaction rate of . Thanks are given to Dr. K. Kubono for discussion on the nuclear data. M. H. and O. K. are grateful to Mr. N. Noda for his help to check some computational results. We thank the referee, Dr. A.Y. Potekhin, for useful remarks and comments.
© European Southern Observatory (ESO) 1999
Online publication: February 22, 1999