Astron. Astrophys. 326, 1069-1075 (1997)

Acknowledgements

I would like to thank to thank the staff of the Observatorio de Roque de los Muchachos at La Palma for their help in obtaining the observational data. Also much thanks to the Santiago office of the European Southern Observatory (ESO), where I was Senior Visitor for three months in 1996, and had the opportunity to carry out much of the data reduction. Finally, I wish to thank the Experimental Physics Department of the University College Dublin for giving me support in the final stages of preparing this paper.

© European Southern Observatory (ESO) 1997

Online publication: April 8, 1998
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