On advanced estimation techniques for exoplanet detection and characterization using ground-based coronagraphs

Peter R. Lawson, Lisa Poyneer, Harrison Barrett, Richard Frazin, Luca Caucci, Nicholas Devaney, Lars Furenlid, Szymon G. Ladysz, Olivier Guyon, John Krista, Jérôme Maire, Christian Marois, Dimitri Mawet, David Mouillet, Laurent Mugnier, Iain Pearson, Marshall Perrin, Laurent Pueyo, Dmitry Savransky

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

The direct imaging of planets around nearby stars is exceedingly difficult. Only about 14 exoplanets have been imaged to date that have masses less than 13 times that of Jupiter. The next generation of planet-finding coronagraphs, including VLT-SPHERE, the Gemini Planet Imager, Palomar P1640, and Subaru HiCIAO have predicted contrast performance of roughly a thousand times less than would be needed to detect Earth-like planets. In this paper we review the state of the art in exoplanet imaging, most notably the method of Locally Optimized Combination of Images (LOCI), and we investigate the potential of improving the detectability of faint exoplanets through the use of advanced statistical methods based on the concepts of the ideal observer and the Hotelling observer. We propose a formal comparison of techniques using a blind data challenge with an evaluation of performance using the Receiver Operating Characteristic (ROC) and Localization ROC (LROC) curves. We place particular emphasis on the understanding and modeling of realistic sources of measurement noise in ground-based AO-corrected coronagraphs. The work reported in this paper is the result of interactions between the co-authors during a week-long workshop on exoplanet imaging that was held in Squaw Valley, California, in March of 2012.

Original languageEnglish (US)
Title of host publicationAdaptive Optics Systems III
DOIs
StatePublished - Dec 1 2012
EventAdaptive Optics Systems III - Amsterdam, Netherlands
Duration: Jul 1 2012Jul 6 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8447
ISSN (Print)0277-786X

Other

OtherAdaptive Optics Systems III
CountryNetherlands
CityAmsterdam
Period7/1/127/6/12

Keywords

  • Adaptive optics
  • Coronagraphs
  • Exoplanets
  • Instrumentation
  • Theory

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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    Lawson, P. R., Poyneer, L., Barrett, H., Frazin, R., Caucci, L., Devaney, N., Furenlid, L., Ladysz, S. G., Guyon, O., Krista, J., Maire, J., Marois, C., Mawet, D., Mouillet, D., Mugnier, L., Pearson, I., Perrin, M., Pueyo, L., & Savransky, D. (2012). On advanced estimation techniques for exoplanet detection and characterization using ground-based coronagraphs. In Adaptive Optics Systems III [844722] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8447). https://doi.org/10.1117/12.925099