Performance and early science with the subaru coronagraphic extreme adaptive optics project

Thayne Currie, Olivier Guyon, Julien Lozi, Tyler Groff, N. Jeremy Kasdin, Frantz Martinache, Timothy D. Brandt, Jeffrey Chilcote, Christian Marois, Benjamin Gerard, Nemanja Jovanovic, Sébastien Vievard

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

1 Scopus citations

Abstract

We describe the current performance of the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument on the Subaru telescope on Maunakea, Hawaii and present early science results for SCExAO coupled with the CHARIS integral field spectrograph. SCExAO now delivers H band Strehl ratios up to ∼0.92, extreme AO corrections for optically faint stars, and planet-To-star contrasts rivaling that of GPI and SPHERE. CHARIS yield high signal-To-noise detections and 1.1-2.4 micron spectra of benchmark directly-imaged companions like HR 8799 cde and kappa And b that clarify their atmospheric properties. We show how spectra and astrometry for kappa And b lead to a reevaluation of this object's nature. Finally, we briefly describe plans for a SCExAO-focused direct imaging campaign to directly image and characterize young exoplanets, planet-forming disks, and (later) mature planets in reflected light.

Original languageEnglish (US)
Title of host publicationTechniques and Instrumentation for Detection of Exoplanets IX
EditorsStuart B. Shaklan
PublisherSPIE
ISBN (Electronic)9781510629271
DOIs
StatePublished - 2019
Externally publishedYes
EventTechniques and Instrumentation for Detection of Exoplanets IX 2019 - San Diego, United States
Duration: Aug 12 2019Aug 15 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11117
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceTechniques and Instrumentation for Detection of Exoplanets IX 2019
CountryUnited States
CitySan Diego
Period8/12/198/15/19

Keywords

  • Adaptive optics
  • Extrasolar planets
  • Infrared

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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  • Cite this

    Currie, T., Guyon, O., Lozi, J., Groff, T., Kasdin, N. J., Martinache, F., Brandt, T. D., Chilcote, J., Marois, C., Gerard, B., Jovanovic, N., & Vievard, S. (2019). Performance and early science with the subaru coronagraphic extreme adaptive optics project. In S. B. Shaklan (Ed.), Techniques and Instrumentation for Detection of Exoplanets IX [111170X] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11117). SPIE. https://doi.org/10.1117/12.2529689