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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
AA(Dunlap Institute for Astronomy and Astrophysics, University of Toronto, 50 St. George Street, Toronto, Ontario. M5S 3H4, Canada ), AB(Université de Montréal, Département de physique C.P.6128, Succ. Centre-Ville H3C 3J7, Montréal, Canada), AC(Université de Montréal, Département de physique C.P.6128, Succ. Centre-Ville H3C 3J7, Montréal, Canada), AD(Astronomy Department, University of California, Berkeley, CA 94720), AE(Université de Montréal, Département de physique C.P.6128, Succ. Centre-Ville H3C 3J7, Montréal, Canada)
Exploring the Formation and Evolution of Planetary Systems, Proceedings of the International Astronomical Union, IAU Symposium, Volume 299, pp. 44-45
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techniques: image processing, techniques: high angular resolution, instrumentation: spectrographs,
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(c) 2014: Copyright © International Astronomical Union 2013
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abstract-type="normal"> Résumé 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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arXiv e-prints