![]() | ![]() |
Astron. Astrophys. 330, 515-520 (1998) AcknowledgementsWe would like to thank Drs. Norbert Schartel and Neill Reid for several helpful discussions. We are also appreciative of the financial support of NATO through grant number CRG940746. ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 1998 Online publication: January 16, 1998 ![]() |