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

doi:10.1117/12.2529689

9 September 2019 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

Author Affiliations +

Proceedings Volume 11117, Techniques and Instrumentation for Detection of Exoplanets IX; 111170X (2019) https://doi.org/10.1117/12.2529689
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

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.

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Thayne Currie, Olivier Guyon, Julien Lozi, Tyler Groff, N. Jeremy Kasdin, Frantz Martinache, Timothy D. Brandt, Jeffrey Chilcote, Christian Marois, Benjamin Gerard, Nemanja Jovanovic, and Sébastien Vievard "Performance and early science with the Subaru Coronagraphic Extreme Adaptive Optics project", Proc. SPIE 11117, Techniques and Instrumentation for Detection of Exoplanets IX, 111170X (9 September 2019); https://doi.org/10.1117/12.2529689

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