Astron. Astrophys. 337, 945-954 (1998)

Acknowledgements

We express our gratitude to A. Storrs of the Space Telescope Science Institute for masterly scheduling our time-critical observations so as to properly sample the lightcurve, to A. Llebaria of LAS for enlightening dicussions on image processing, to G. Schwarz of DLR for providing specific software, and to M. A'Hearn for reviewing the manuscript. This work was supported by grants from the Université de Provence and from the "Action de Soutien Télescope Spatial".

© European Southern Observatory (ESO) 1998

Online publication: August 27, 1998
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