Astron. Astrophys. 319, 547-560 (1997)

Acknowledgements

We thank F. de Felice for useful discussions and Lars Hernquist for providing a copy of his TREECODE. We also thank Alan P. Boss for a number of perceptive comments and enlightening suggestions that have certainly improved the quality of the paper. The calculations with code FD were performed on the CRAY J916/6-1024 supercomputer of the University of Konstanz, Germany, and the calculations with code TREESPH were made on the CRAY YMP-4/432 supercomputer of the Universidad Nacional Autónoma de México. This work was supported in part by the Ministero dell'Università e della Ricerca Scientifica e Tecnologica of Italy and by the Consejo Nacional de Ciencia y Tecnología (CONACYT) of Mexico. One of us (JK) wishes to thank the International Centre for Theoretical Physics (ICTP), Trieste, Italy, and the Bundesministerium für Bildung und Forschung (BmBT) of Germany for partial support.

© European Southern Observatory (ESO) 1997

Online publication: July 3, 1998
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