Performance and early science with the Subaru Coronagraphic Extreme Adaptive Optics project
Creators
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1.
Ames Research Center
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2.
University of Hawaii at Hilo
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3.
Goddard Space Flight Center
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4.
Princeton University
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5.
Observatoire de la Côte d'Azur
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6.
University of California, Santa Barbara
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7.
University of Notre Dame
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8.
University of Victoria
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9.
California Institute of Technology
Contributors
Other:
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.
Additional Information
© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE). T.C. is supported by a NASA Senior Postdoctoral Fellowship and NASA/Keck grant LK-2663-948181. We emphasize the pivotal cultural role and reverence that the summit of Maunakea has always had within the Hawaiian community. We are most fortunate to conduct scientific observations from this mountain.Attached Files
Published - 111170X.pdf
Accepted Version - 1909.10522.pdf
Files
111170X.pdf
Files
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Additional details
Identifiers
- Eprint ID
- 98626
- Resolver ID
- CaltechAUTHORS:20190913-073201467
Related works
- Describes
- https://arxiv.org/abs/1909.10522 (URL)
Funding
- NASA Postdoctoral Fellowship
- NASA
- LK-2663-948181
Dates
- Created
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2019-09-13Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field
Caltech Custom Metadata
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 11117