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Confidence Level and Sensitivity Limits in High Contrast Imaging
C. Marois, D. Lafreniere, B. Macintosh +1
In long adaptive optics corrected exposures, exoplanet detections are currently limited by speckle noise originating from the telescope and instrument optics, and it is expected th…
The Gemini Deep Planet Survey -- GDPS
David Lafreniere, Rene Doyon, Christian Marois +10
We present the results of the Gemini Deep Planet Survey, a near-infrared adaptive optics search for giant planets and brown dwarfs around nearby young stars. The observations were…
Improving the speckle noise attenuation of simultaneous spectral differential imaging with a focal plane holographic diffuser
David Lafrenière, René Doyon, Daniel Nadeau Étienne Artigau +2
Direct exoplanet detection is limited by speckle noise in the point spread function (PSF) of the central star. This noise can be reduced by subtracting PSF images obtained simultan…
Discovery of the Widest Very Low Mass Binary
Étienne Artigau, David Lafrenière, René Doyon +3
We report the discovery of a very low mass binary system (primary mass <0.1 Msol) with a projected separation of ~5100 AU, more than twice that of the widest previously known syste…
A new algorithm for point spread function subtraction in high-contrast imaging: a demonstration with angular differential imaging
David Lafreniere, Christian Marois, Rene Doyon +2
Direct imaging of exoplanets is limited by bright quasi-static speckles in the point spread function (PSF) of the central star. This limitation can be reduced by subtraction of ref…