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Exo-zodi Modeling for the Large Binocular Telescope Interferometer

Kennedy, Grant M. and Wyatt, Mark C. and Bailey, Vanessa P. and Bryden, Geoffrey and Danchi, William C. and Defrère, Denis and Haniff, Chris and Hinz, Philip M. and Lebreton, Jérémy and Mennesson, Bertrand and Millan-Gabet, Rafael and Morales, Farisa Y. and Panić, Olja and Rieke, George H. and Roberge, Aki and Serabyn, Eugene and Shannon, Andrew and Skemer, Andrew J. and Stapelfeldt, Karl R. and Su, Katherine Y. L. and Weinberger, Alice J. (2015) Exo-zodi Modeling for the Large Binocular Telescope Interferometer. Astrophysical Journal Supplement Series, 216 (2). Art. No. 23. ISSN 0067-0049.

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Habitable zone dust levels are a key unknown that must be understood to ensure the success of future space missions to image Earth analogs around nearby stars. Current detection limits are several orders of magnitude above the level of the solar system's zodiacal cloud, so characterization of the brightness distribution of exo-zodi down to much fainter levels is needed. To this end, the Large Binocular Telescope Interferometer (LBTI) will detect thermal emission from habitable zone exo-zodi a few times brighter than solar system levels. Here we present a modeling framework for interpreting LBTI observations, which yields dust levels from detections and upper limits that are then converted into predictions and upper limits for the scattered light surface brightness. We apply this model to the HOSTS survey sample of nearby stars; assuming a null depth uncertainty of 10^(–4) the LBTI will be sensitive to dust a few times above the solar system level around Sun-like stars, and to even lower dust levels for more massive stars.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Kennedy, Grant M.0000-0001-6831-7547
Bailey, Vanessa P.0000-0002-5407-2806
Defrère, Denis0000-0003-3499-2506
Lebreton, Jérémy0000-0003-1476-5963
Mennesson, Bertrand0000-0003-4205-4800
Millan-Gabet, Rafael0000-0003-0447-5866
Morales, Farisa Y.0000-0001-9414-3851
Rieke, George H.0000-0003-2303-6519
Skemer, Andrew J.0000-0001-6098-3924
Stapelfeldt, Karl R.0000-0002-2805-7338
Weinberger, Alice J.0000-0001-6654-7859
Additional Information:© 2015 The American Astronomical Society. Received 2014 October 1; accepted 2014 November 14; published 2015 January 27. The Large Binocular Telescope Interferometer is funded by the National Aeronautics and Space Administration as part of its Exoplanet Exploration Program. This work was supported by the European Union through ERC grant No. 279973 (G.M.K., O.P., A.B.S., and M.C.W.). We thank the reviewer for valuable comments. Part of this work was performed at the Jet Propulsion Laboratory, California Institute of Technology, and at theNASA Exoplanet Science Center (NExScI), under contract with NASA.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
European Research Council (ERC)279973
Subject Keywords:circumstellar matter; instrumentation: interferometers; zodiacal dust
Issue or Number:2
Record Number:CaltechAUTHORS:20150409-104602742
Persistent URL:
Official Citation:Exo-zodi Modeling for the Large Binocular Telescope Interferometer Grant M. Kennedy et al. 2015 ApJS 216 23
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56526
Deposited By: Jason Perez
Deposited On:15 Apr 2015 23:42
Last Modified:05 Mar 2020 20:12

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