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Astron. Astrophys. 330, 585-599 (1998)

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7. Further works

This study has been essentially limited by the approximate knowledge of several parameters taken from various sources (the ground-based orbital elements in the present case). For more than two thirds of the 145 selected objects, an improvement of the orbits is hihgly desirable to improve the quality of the results. An interesting direction to be explored, consists of the direct use of the individual relative positions of the components (separation [FORMULA] and position angle [FORMULA] at precise dates) on the arc of orbit corresponding to the Hipparcos observation's epochs. By this way, the number of candidates should be largely increased, since the complete orbit is no longer needed to perform the processing: a polynomial fit in the interesting area should be sufficient to interpolate the separation [FORMULA] at a given date. Finally, the survey of short period systems undertaken for this study is not comprehensive, and a more extensive research is planned for the next coming months.

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© European Southern Observatory (ESO) 1998

Online publication: January 16, 1998