Imagerie directe de planètes extrasolaires

Physics – Optics

Scientific paper

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Extra-Solar Planets: Detection

Scientific paper

Direct imaging is one of the most difficult technique to characterize extrasolar planets, yet a promising one since it brings new types of parameters and allows astronomers to increase the search space for these objects around a variety of stars. In this lecture, I present the various techniques required to directly image faint companions of stars illustrating them with examples. I review both adaptive optics and stellar coronography for ground-based and space single-pupil telescopes, and, interferometric instruments using colour difference and nulling. Finally I draw a non exhaustive however representative list of projects.

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