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

Published online by Cambridge University Press:  06 January 2014

Jérôme Maire ,
Jonathan Gagné ,
David Lafrenière ,
James R. Graham  and
René Doyon
Jérôme Maire
Affiliation:
Dunlap Institute for Astronomy and Astrophysics, University of Toronto, 50 St. George Street, Toronto, Ontario. M5S 3H4, Canada email: maire@dunlap.utoronto.ca
Jonathan Gagné
Affiliation:
Université de Montréal, Département de physique C.P.6128, Succ. Centre-Ville H3C 3J7, Montréal, Canada
David Lafrenière
Affiliation:
Université de Montréal, Département de physique C.P.6128, Succ. Centre-Ville H3C 3J7, Montréal, Canada
James R. Graham
Affiliation:
Astronomy Department, University of California, Berkeley, CA 94720
René Doyon
Affiliation:
Université de Montréal, Département de physique C.P.6128, Succ. Centre-Ville H3C 3J7, Montréal, Canada
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Résumé

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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.

Keywords

techniques: image processingtechniques: high angular resolutioninstrumentation: spectrographs
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S299: Exploring the Formation and Evolution of Planetary Systems , June 2013 , pp. 44 - 45
Copyright
Copyright © International Astronomical Union 2013 

References

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