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Exoplanets imaging with a Phase-Induced Amplitude Apodization Coronagraph - I. Principle
Olivier Guyon, Eugene A. Pluzhnik, Raphael Galicher +3
Using 2 aspheric mirrors, it is possible to apodize a telescope beam without losing light or angular resolution: the output beam is produced by ``remapping'' the entrance beam to p…
Interferometric observations of the supergiant stars alpha Orionis and alpha Herculis with FLUOR at IOTA
G. Perrin, S. T. Ridgway, V. Coudé du Foresto +3
We report the observations in the K band of the red supergiant star alpha Orionis and of the bright giant star alpha Herculis with the FLUOR beamcombiner at the IOTA interferometer…
Are dust shell models well-suited to explain interferometric data of late-type stars in the near-infrared?
P. Schuller, P. Salomé, G. Perrin +7
Recently available near-infrared interferometric data on late-type stars show a strong increase of diameter for asymptotic giant branch (AGB) stars between the K (2.0 - 2.4 μm) and…