![]() | ![]() |
Astron. Astrophys. 319, 720-724 (1997) AcknowledgementsThe computations were performed on the CRAY of the computer center IDRIS and on the CONVEX of the computer center of Observatoire de Paris.
© European Southern Observatory (ESO) 1997 Online publication: July 3, 1998 ![]() |