High-fidelity photometry and astrometry of high-contrast imaged companions using LOCI processing

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High-fidelity photometry and astrometry of high-contrast imaged companions using LOCI processing

Maire, Jérôme; Gagné, Jonathan; Lafrenière, David; Graham, James R.; Doyon, René

Proceedings of the International Astronomical Union, 06/2013, Volume: 8, Issue: S299

Journal Article

Direct imaging and spectroscopy of exoplanets is a key element for understanding planet formation and migration. Such direct detections and characterizations remains technologically challenging, since a very high contrast ratio and small angular separation are involved, and futhermore speckle noise limits the high-contrast imaging performance. We further discuss a speckle subtraction and suppression technique that fully takes advantage of spectral and time-domain information on quasi-static speckles to measure the highest-fidelity photometry as well as accurate astrometry of detected companions.

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Maire, Jérôme | Gagné, Jonathan | Lafrenière, David | Graham, James R. | Doyon, René

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