To obtain stellar masses and distances is still the main goal of binary studies. To get more powerful instruments and to improve the observation techniques should not be the unique objective of astronomers working in this field. In many instances, powerful reduction methods such as the one we propose can derive significantly improved data from already existing observations.
The approach presented in this paper is not limited to binary stars and other areas of astronomy could take advantage of our method. Any problem that can be considered as a minimization problem may profit from a similar approach. We hope this paper is going to promote SA in the astronomical community.Acknowledgements
I express my thanks to H. Eichhorn (who also suggested this investigation field) and R.E. Wilson for having critically read the manuscript and for the many fruitful discussions we had about this topic. I also thank P. Lampens and the anonymous referees for their suggestions.
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