Astron. Astrophys. 355, 848-862 (2000)

Acknowledgements

We would like to thank C. Vanderriest and O. Le Fèvre for the acquisition of the first images of Abell 521 at CFHT. We thank Philippe Prugniel for calculating the stellar velocity dispersion of the BCG with the Hypercat package currently developed at the Observatoire de Lyon. We are very grateful to Marie-Christine Angonin-Willaime, Lia Athanassoula, Alain Mazure, Jean-Marc Petit and Philippe Prugniel for very fruitful discussions on the nature of the arc-like structure and on the dynamics of this cluster. We thank an anonymous referee for his(her) constructive comments and suggestions which allowed us to improve the quality of the paper.

© European Southern Observatory (ESO) 2000

Online publication: March 21, 2000
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