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Vortex fiber nulling for exoplanet observations: conceptual design, theoretical performance, and initial scientific yield predictions

Ruane, Garreth and Echeverri, Daniel and Jovanovic, Nemanja and Mawet, Dimitri and Serabyn, Eugene and Wallace, J. Kent and Wang, Jason and Batalha, Natasha (2019) Vortex fiber nulling for exoplanet observations: conceptual design, theoretical performance, and initial scientific yield predictions. In: Techniques and Instrumentation for Detection of Exoplanets IX. Proceedings of SPIE. No.11117. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 1111716. ISBN 9781510629271. https://resolver.caltech.edu/CaltechAUTHORS:20190912-162000191

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Abstract

Vortex fiber nulling (VFN) is a method that may enable the detection and characterization of exoplanets at small angular separations (0.5-2 λ/D) with ground- and space-based telescopes. Since the field of view is within the inner working angle of most coronagraphs, nulling accesses non-transiting planets that are otherwise too close to their star for spectral characterization by other means, thereby significantly increasing the number of known exoplanets available for direct spectroscopy in the near-infrared. Furthermore, VFN targets planets on closer-in orbits which tend to have more favorable planet-to-star flux ratios in reflected light. Here, we present the theory and applications of VFN, show that the optical performance is approximately equivalent for a variety of implementations and aperture shapes, and discuss the trade-offs between throughput and engineering requirements using numerical simulations. We compare vector and scalar approaches and, finally, show that beam shaping optics may be used to significantly improve the throughput for planet light. Based on theoretical performance, we estimate the number of known planets and theoretical exoEarths accessible with a VFN instrument linked to a high-resolution spectrograph on the future Thirty Meter Telescope.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.2528555DOIArticle
https://arxiv.org/abs/1908.09780arXivDiscussion Paper
ORCID:
AuthorORCID
Ruane, Garreth0000-0003-4769-1665
Echeverri, Daniel0000-0002-1583-2040
Mawet, Dimitri0000-0002-8895-4735
Wang, Jason0000-0003-0774-6502
Additional Information:© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE). This work was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration (NASA). This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with NASA under the Exoplanet Exploration Program.
Group:Astronomy Department
Funders:
Funding AgencyGrant Number
NASA/JPL/CaltechUNSPECIFIED
Subject Keywords:Instrumentation, exoplanets, interferometry
Series Name:Proceedings of SPIE
Issue or Number:11117
Record Number:CaltechAUTHORS:20190912-162000191
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190912-162000191
Official Citation:Garreth Ruane, Daniel Echeverri, Nemanja Jovanovic, Dimitri Mawet, Eugene Serabyn, J. Kent Wallace, Jason Wang, and Natasha Batalha "Vortex fiber nulling for exoplanet observations: conceptual design, theoretical performance, and initial scientific yield predictions", Proc. SPIE 11117, Techniques and Instrumentation for Detection of Exoplanets IX, 1111716 (9 September 2019); https://doi.org/10.1117/12.2528555
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98623
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:13 Sep 2019 04:26
Last Modified:19 Nov 2019 18:48

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