Astron. Astrophys. Suppl. Ser.
Volume 131, Number 2, August 1998
|Page(s)||377 - 382|
|Published online||15 August 1998|
Simultaneous least-squares adjustment of visual and spectroscopic observations of binary stars
Université de Liège, boulevard du Rectorat, 7 B31 bte 53, B-4000 Liège, Belgium
Accepted: 18 March 1998
Double-lined spectroscopic visual binaries allow the hypothesis-free estimation of their individual mas ses and of their distances. Instead of two independent determinations of some orbital parameters, we propose a simultaneous adjustment of visual and spectroscopic observations. This paper presents the different steps of such a simultaneous adjustment: (a) to transform the problem into a quest for the global minimum of a nonlinear function; (b) to obtain that minimum using simulated annealing and the Broyden-Fletcher-Goldstrab-Shanno local search method.
Key words: binaries: spectroscopic; visual / methods: data analysis; numerical
© European Southern Observatory (ESO), 1998