Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...310..508c&link_type=abstract
Astronomy and Astrophysics, v.310, p.508-518
Astronomy and Astrophysics
Astrophysics
5
Methods: Data Analysis, Techniques: Interferometric, Binaries: Visual, Stars: Imaging, Infrared: Stars
Scientific paper
Making use of the technique of probability imaging, intensity ratios and relative positions of components are obtained for six double stars (ζ Aqr, γ Vir, ζ Ori, Gl 473, Gl 804 and Gl 866), from one-dimensional near-infrared speckle data obtained with a slit-scanning specklegraph. The two-fold probability density function (PDF) is used to reconstruct the binary system. The data reduction is made with a parametric approach, by minimizing a distance between observed two-fold PDFs and modelled ones, obtained by using a nearby reference star. In order to reduce the noise effects, weighting functions are applied to the PDFs prior to the distance measurements. Several distances have been used (Euclidean, Kolmogorov, Jeffreys-Matusita, χ^2^, Kullback-Leibler) and have given consistent results.
Aime Claude
Carbillet Marcel
Perrier Ch.
Ricort Gilbert
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