Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006o%26t....62...26s&link_type=abstract
Observations & Travaux, vol. 62, p. 26-33
Astronomy and Astrophysics
Astronomy
Scientific paper
Since the start of the ESA-HIPPARCOS astrometry project, it appeared clearly that double and multiple stars would create severe problems and therefore, in general it was decided to omit them in the input Catalogue. Recent studies have shown however that many double stars may be retained, if properly selected for their observability, ( ESA Colloquium, 1982 ), to the great benefit of this important field of astronomy and without disturbing the main astrometric program of the satellite. In order to enable the Input Catalogue Consortium to carry out the best and most efficient selection of stars to be observed on the basis of these two opposite considerations, it appears essential to make available for each system components, precise positional information that generally cannot be found in the Index Catalogue or in any other source. Bordeaux Observatory is willing to participate in collecting additional information. By means of new observations of know or new components of double and multiple systems. At the same time, some new wide systems were discovered. We present the last set of observations. The four previous list are Soulie 1983, 1984, 1985 and 1986.
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