Astron. Astrophys. Suppl. Ser.
Volume 126, Number 3, December II 1997
|Page(s)||555 - 561|
|Published online||15 December 1997|
ICCD speckle observations of binary stars: Measurements during 1994–1995*
UMR 6525 Astrophysique, Université de Nice Sophia, Antipolis, Centre National de la Recherche Scientifique, Parc Valrose, F-06108 Nice Cedex 2, France
2 Observatoire Midi Pyrénées, 14 Av. Edouard Belin, F-31000 Toulouse, France
3 UMR 6528, Département Fresnel de l'Observatoire de la Côte d'Azur, BP. 4229, F-06304 Nice Cedex 4, France
Send offprint request to: E. Aristidi
Accepted: 1 April 1997
We present speckle observations of nineteen double stars and the triple star 2 Cam. Angular separations, absolute position angles and relative photometry result from these observations. The angular separation is derived from the power spectrum. The position angle and the relative photometry are determined by two recent techniques: the cross-correlation between the speckle images and their square, and the ratios of twofold probability density functions of the images.
Key words: methods: data analysis / techniques: image processing / techniques: interferometric / binaries: close
© European Southern Observatory (ESO), 1997