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

  • Jérôme Maire (a1), Jonathan Gagné (a2), David Lafrenière (a2), James R. Graham (a3) and René Doyon (a2)...

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

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Jolissaint, L., Véran, J.-P., et al. 2004, SPIE 5490 151163
Lafrenière, D., Marois, C., Doyon, R., & Nadeau, D. 2007, ApJ 660 770780
Maire, J., Gagné, J., Lafrenière, D., Doyon, R., Graham, J. R., Véran, J.-P., & Poyneer, L. A. 2012, SPIE, Volume 8447, article id. 844760, 14 pp. (2012)
Marois, C., Doyon, R., Racine, R., & Nadeau, D. 2000, PASP v112 9196
Poyneer, L. A., Véran, J.-P., et al. 2006, SPIE, 6272
Poyneer, L. A., Macintosh, B., et al. 2007, JOSAA, 24, 2645
Véran, J.-P., Rigaut, F., et al. 1997, JOSAA 14 11, 30573069
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