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Observational Programme for Classical and CCD Photometry of Visual Double and Multiple Systems

Published online by Cambridge University Press:  12 April 2016

E. Oblak  and
P. Lampens
E. Oblak
Affiliation:
Observatoire de Besançon, 41 bis Ave d’Observatoire, F-25044 Besancon CEDEX, France
P. Lampens
Affiliation:
Royal Observatory of Belgium, Ringlaan 3, B – 1180 Brussels, Belgium

Extract

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Complementary accurate photometric data with astrophysical content are needed for a well-chosen sample of binaries and multiple systems for which good-quality astrometric data already exist or will soon be available. The observational programme, started in the context of the European Network of Laboratories “Visual Double Stars” (Oblak et al. 1992), is therefore based on samples extracted from the “Catalogue des Composantes d’Etoiles Doubles et Multiples” (CCDM, Dommanget, 1989) and reported in Annex 1 (Double and Multiple Systems) of the HIPPARCOS Input Catalogue (C. Turon et al. 1992).

Systems with components in the HIPPARCOS Input Catalogue are selected for which the present photometric information is poor, i.e. not all components have been observed or they have colour indices and/or magnitudes of insufficient quality for extraction of astrophysical quantities (Figure 1).

Observations, performed in various observatories located in both hemispheres, must yield both classical and CCD photometric campaigns.

Type
Classical Methods, Catalogs, & Databases
Information
International Astronomical Union Colloquium , Volume 135: Complementary Approaches to Double and Multiple Star Research , 1992 , pp. 339 - 342
Copyright
Copyright © Astronomical Society of the Pacific 1992

References

Couteau, P. 1992 in Centre de Données Astronomiques de Strasbourg, in preparationGoogle Scholar
Dommanget, J. 1989, in Star Catalogues: A Centennial Tribute to A.N. Vyssotsky, eds. Philip, and Upgren, , 77-82.Google Scholar
Oblak, E. 1988, Ap&SS, 142, 31 Google Scholar
Oblak, et al. 1992, “The European Network of Laboratories: Visual Double Stars”, this ColloquiumCrossRefGoogle Scholar
Turon, C. et al. 1992, The HIPPARCOS Input Catalogue, ESA SP1136, Vol. 6 Google Scholar
Worley, C.E. & Douglas, G.G. 1984, The Washington Double Star Catalog, (Washington, USNO)Google Scholar
Worley, C.E. 1989, Publ. U.S.N.O., Vol. 25 Google Scholar