We dedicate this paper to the memory of our two late colleagues, Antoine Duquennoy and Jean Marie Mariotti, who started this program with two of us (CP, MM) and pushed it forward until their untimely death. We are indebted to the many CORAVEL observers who contributed to measurements of Gl 570BC over the years, and to Didier Queloz, Dominique Naef and Nuno Santos who obtained some ELODIE and CORALIE radial velocities for us at critical orbital phases. We also warmly thank the colleagues who assisted us for the 2D speckle or AO observations: Steve Ridgway and Julian Christou who participated in the KPNO 2D speckle observation and Ron Probst for the operation of the infrared imager, Daniel Rouan, François Lacombe and their group for the assistance with the CFHT CIRCUS infrared camera and E. Tessier who wrote and operated its speckle acquisition and reduction software, the operators and the support and infrared teams of ESO, La Silla for their help during COME-ON+ observations. We are grateful to the anonymous referee for constructive comments and clarification requests, which led to an improved paper.
© European Southern Observatory (ESO) 1999
Online publication: November 3, 1999