High-fidelity photometry and astrometry of high-contrast imaged companions using LOCI processing. Issue Volume 8:Issue S299(2013) (6th January 2014)

• Record Type: Journal Article
• Authors: Maire, Jérôme; Gagné, Jonathan; Lafrenière, David; Graham, James R.; Doyon, René
• Is Part Of: Proceedings of the International Astronomical Union. Volume 8:Issue S299(2013)
• Page Start: 44
• Page End: 45
• Publication Date: 2014-01-06
• Subjects: techniques: image processing, -- techniques: high angular resolution, -- instrumentation: spectrographs; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921313007795
• Languages: English
• ISSNs: 1743-9213

Abstract

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.