Characterizing exoplanet atmospheres with SCALES medium-spectral-resolution angular/spectral differential imaging
Creators
- Desai, Aditi1
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Sallum, Stephanie1
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Banyal, Ravinder K.2
- Batalha, Natalie3
- Batalha, Natasha4
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Blake, Geoffrey A.5
- Brandt, Timothy D.6
- Briesemeister, Zack4
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de Kleer, Katherine5
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de Pater, Imke7
- Eisner, Joshua A.8
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Fong, Wen-fai9
- Greene, Tom4
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Honda, Mitsuhiko10
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Kain, Isabel3
- Kilpatrick, Charlie9
- Lach, Mackenzie1
- Liu, Mike11
- Macintosh, Bruce A.3
- Martinez, Raquel1
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Mawet, Dimitri5
- Miles, Brittany E.8
- Morley, Caroline12
- Powell, Diana13
- Sheehan, Patrick12
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Skemer, Andrew3
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Stelter, R. D.3
- Stone, Jordan14
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Surya, Arun2
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Thirupathi, Sivarani2
- Wagner, Kevin8
- Zhou, Yifan15
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1.
University of California, Irvine
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2.
Indian Institute of Astrophysics
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3.
University of California, Santa Cruz
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4.
National Aeronautics and Space Administration
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5.
California Institute of Technology
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6.
University of California, Santa Barbara
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7.
University of California, Berkeley
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8.
University of Arizona
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9.
Northwestern University
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10.
Okayama University of Science
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11.
University of Hawaii at Manoa
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12.
The University of Texas at Austin
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13.
University of Chicago
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14.
United States Naval Research Laboratory
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15.
University of Virginia
Contributors
Abstract
SCALES (Slicer Combined with Array of Lenslets for Exoplanet Spectroscopy) is a high-contrast lenslet-based integral field spectrograph (IFS) designed to characterize exoplanet atmospheres in the 2 - 5 micron wavelength range. The SCALES medium-resolution mode provides the ability to characterize exoplanets at increased spectral resolution via the use of a lenslet subarray with a 0.34 x 0.36 arcsecond field of view and an image slicer. We use the SCALES simulator scalessim to generate high-fidelity mock observations of planets in the mediumresolution mode that include realistic Keck adaptive optics performance, as well as other atmospheric and instrumental noise effects, to simulate planet detections, and then employ angular differential imaging to extract the planet spectra. Analyzing the recovered spectra from these simulations allows us to quantify the effects of systematic noise sources on planet characterization, in particular residual speckle noise following angular differential data processing. We use these simulated recovered spectra to explore SCALES' ability to constrain molecular abundances and disequilibrium chemistry in giant exoplanet atmospheres.
Copyright and License
© 2024 SPIE.
Acknowledgement
We are grateful to the Heising-Simons Foundation, the Alfred P. Sloan Foundation, and the Mt. Cuba Astronomical
Foundation for their generous support of our efforts. This project also benefited from work conducted under
the NSF Graduate Research Fellowship Program. S.S. is supported by the National Science Foundation under
MRI Grant No. 2216481. R.A.M is supported by the National Science Foundation MPS-Ascend Postdoctoral
Research Fellowship under Grant No. 2213312.
Additional details
Funding
- Heising-Simons Foundation
- Alfred P. Sloan Foundation
- Mt. Cuba Astronomical Foundation
- National Science Foundation
- NSF Graduate Research Fellowship -
- National Science Foundation
- AST-2216481
- National Science Foundation
- 2213312
Caltech Custom Metadata
- Caltech groups
- Astronomy Department , Division of Geological and Planetary Sciences (GPS) , Division of Physics, Mathematics and Astronomy (PMA)
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 13096
- Publication Status
- Published