Exact equatorial coordinates of known or new components of some 200 double or multiple systems

Details Exact equatorial coordinates of known or new components of some 200 double or multiple systems Exact equatorial coordinates of known or new components of some 200 double or multiple systems

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26as...54..281s&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 54, Nov. 1983, p. 281-291. In French.

Astronomy and Astrophysics

Astronomy

3

Astronomical Catalogs, Astronomical Coordinates, Binary Stars, Astrometry, Astronomical Photography, Hipparcos Satellite, Spaceborne 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. However, recent studies have shown that many double stars may be retained - if properly selected for their observability - to the greatest benefit of this important field of astronomy, without disturbing the main astrometric program of the satellite. In view to enabling the Input Catalogue Consortium to carry out the best and the most efficient selection of stars to be observed on the basis of these two opposite considerations, it appears essential to put at its disposal for each system component, precise positional information that generally cannot be found in the Index Catalogue or in any other source. For this purpose, a specially adapted Catalogue of the components of Double and Multiple systems (CCDM) giving accurate equatorial coordinates of all components, is being prepared.

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