Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26as..109..401c&link_type=abstract
Astronomy and Astrophysics Suppl. 109, 401-415 (1995)
Astronomy and Astrophysics
Astrophysics
15
Atmospheric Effects, Techniques: Interferometric, Techniques: Image Processing, Methods: Data Analysis, Binaries: General, Stars: Rotation
Scientific paper
A combination between high angular and high spectral resolution techniques, Differential Interferometry (DI) yields seeing independent information with a resolution eventually much higher than the telescope diffraction limit. A first paper presented a formalism for the estimation of the parameters modelling the brightness and velocity distribution of any astronomical candidate, even partially resolved. Here we describe the application of this general method to the measurement of the angular diameters, rotation velocities and position angles of the rotation axes of rotating stars and to the measurement of the angular vectorial separation and radial velocity differences in binary systems. A method to compute the uncertainties on this parameters is presented and used for a numerical computation of the limiting performances of DI for this two kinds of applications.
Chelli Alain
Petrov Romain G.
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