Astron. Astrophys. Suppl. Ser.
Volume 145, Number 2, August 2000
|Page(s)||215 - 222|
|Published online||15 August 2000|
Resolved double-lined spectroscopic binaries: A neglected source of hypothesis-free parallaxes and stellar masses
Institut d'Astronomie et d'Astrophysique, Université Libre de Bruxelles, CP. 226, Boulevard du Triomphe, B-1050 Bruxelles, Belgium
2 Royal Observatory of Belgium, Avenue Circulaire 3, B-1180 Bruxelles, Belgium
Send offprint request to: D. Pourbaix, e-mail: email@example.com
Accepted: 9 May 2000
Double-lined spectroscopic binaries, once visually resolved (VB-SB2), provide hypothesis-free orbital parallaxes and masses of both components. Unlike eclipsing-spectroscopic binaries for which many accurate masses are already known (Andersen 1991; Andersen 1997), the number of VB-SB2 remains rather small. This paper presents 40 such systems for which published visual observations and radial velocities allow a simultaneous adjustment of both data sets. The precision of the individual masses as well as the evolution of that precision with respect to the published precision is investigated.
Key words: methods: data analysis / stars: binaries: spectroscopic, visual; distances; fundamental parameters
© European Southern Observatory (ESO), 2000