Evolution of the "efficiency” when different data sets are combined into a unified adjustment

¹ Institut d'Astronomie et d'Astrophysique, Université Libre de Bruxelles, C.P. 226, Boulevard du Triomphe, B-1050 Bruxelles, Belgium
² Institut für Astronomie, University of Vienna, Austria

Send offprint request to: D. Pourbaix

Received: 7 October 1998
Accepted: 1 December 1998

Abstract

Using a sample of binaries which were observed visually (VB) as well as spectroscopically for both components (SB2), we show that the efficiency almost always increases when a combined VB-SB2 solution replaces one based only on VB.