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Science yield estimate with the Wide-Field Infrared Survey Telescope coronagraph

Traub, Wesley A. and Breckinridge, James and Greene, Thomas P. and Guyon, Olivier and Kasdin, N. Jeremy and Macintosh, Bruce (2016) Science yield estimate with the Wide-Field Infrared Survey Telescope coronagraph. Journal of Astronomical Telescopes, Instruments, and Systems, 2 (1). Art. No. 011020. ISSN 2329-4124. doi:10.1117/1.JATIS.2.1.011020.

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The coronagraph instrument (CGI) on the Wide-Field Infrared Survey Telescope will directly image and spectrally characterize planets and circumstellar disks around nearby stars. Here we estimate the expected science yield of the CGI for known radial-velocity (RV) planets and potential circumstellar disks. The science return is estimated for three types of coronagraphs: the hybrid Lyot and shaped pupil are the currently planned designs, and the phase-induced amplitude apodizing complex mask coronagraph is the backup design. We compare the potential performance of each type for imaging as well as spectroscopy. We find that the RV targets can be imaged in sufficient numbers to produce substantial advances in the science of nearby exoplanets. To illustrate the potential for circumstellar disk detections, we estimate the brightness of zodiacal-type disks, which could be detected simultaneously during RV planet observations.

Item Type:Article
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URLURL TypeDescription
Breckinridge, James0000-0002-9488-098X
Greene, Thomas P.0000-0002-8963-8056
Guyon, Olivier0000-0002-1097-9908
Macintosh, Bruce0000-0003-1212-7538
Additional Information:© 2016 Society of Photo-Optical Instrumentation Engineers. Received June 15, 2015; Accepted February 22, 2016. Published online Mar. 18, 2016. We thank the referee for valuable comments, which led to significant improvements in the text. This research has made use of the Exoplanet Orbit Database and the Exoplanet Data Explorer at This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. The research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.
Funding AgencyGrant Number
Subject Keywords:coronagraphs; exoplanets; direct imaging; spectra; disks
Issue or Number:1
Record Number:CaltechAUTHORS:20161018-070312790
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Official Citation:Traub WA, Breckinridge J, Greene TP, Guyon O, Jeremy Kasdin NN, Macintosh B; Science yield estimate with the wide-field infrared survey telescope coronagraph. J. Astron. Telesc. Instrum. Syst. 0001;2(1):011020. doi:10.1117/1.JATIS.2.1.011020.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:71198
Deposited On:18 Oct 2016 16:58
Last Modified:11 Nov 2021 04:41

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