Adaptive optics for direct detection of extrasolar planets: the Gemini Planet Imager

Details Adaptive optics for direct detection of extrasolar planets: the Gemini Planet Imager Adaptive optics for direct detection of extrasolar planets: the Gemini Planet Imager

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007crphy...8..365m&link_type=abstract

Comptes Rendus - Physique, Volume 8, Issue 3-4, p. 365-373.

Physics

Optics

5

Scientific paper

The direct detection of photons emitted or reflected by extrasolar planets, spatially resolved from their parent star, is a major frontier in the study of other solar systems. Direct detection will provide statistical information on planets in 5 50 AU orbits, inaccessible to current Doppler searches, and allow spectral characterization of radius, temperature, surface gravity, and perhaps composition. Achieving this will require new, dedicated, high-contrast instruments. One such system under construction is the Gemini Planet Imager (GPI). This combines a high-order/high-speed adaptive optics system to control wavefront errors from the Earth's atmosphere, an advanced coronagraph to block diffraction, ultrasmooth optics, a precision infrared interferometer to measure and correct systematic errors, and a integral field spectrograph/polarimeter to image and characterize target planetary systems. We predict that GPI will be able to detect planets with brightness less than 10-7 of their parent star, sufficient to observe warm self-luminous planets around a large population of targets. To cite this article: B. Macintosh et al., C. R. Physique 8 (2007).

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