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Proceedings Paper

Hi-5: a potential high-contrast thermal near-infrared imager for the VLTI
Author(s): D. Defrère; M. Ireland; O. Absil; J.-P. Berger; W. C. Danchi; S. Ertel; A. Gallenne; F. Hénault; P. Hinz; E. Huby; S. Kraus; L. Labadie; J.-B. Le Bouquin; G. Martin; A. Matter; B. Mennesson; A. Mérand; S. Minardi; J. D. Monnier; B. Norris; G. Orban de Xivry; E. Pedretti; J.-U. Pott; M. Reggiani; E. Serabyn; J. Surdej; K. R. W. Tristram; J. Woillez
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Paper Abstract

Hi-5 is a high-contrast (or high dynamic range) infrared imager project for the VLTI. Its main goal is to characterize young extra-solar planetary systems and exozodiacal dust around southern main-sequence stars. In this paper, we present an update of the project and key technology pathways to improve the contrast achieved by the VLTI. In particular, we discuss the possibility to use integrated optics, proven in the near-infrared, in the thermal near-infrared (L and M bands, 3-5 μm) and advanced fringe tracking strategies. We also address the strong exoplanet science case (young exoplanets, planet formation, and exozodiacal disks) offered by this wavelength regime as well as other possible science cases such as stellar physics (fundamental parameters and multiplicity) and extragalactic astrophysics (active galactic nuclei and fundamental constants). Synergies and scientific preparation for other potential future instruments such as the Planet Formation Imager are also briefly discussed.

Paper Details

Date Published: 9 July 2018
PDF: 15 pages
Proc. SPIE 10701, Optical and Infrared Interferometry and Imaging VI, 107010U (9 July 2018); doi: 10.1117/12.2313700
Show Author Affiliations
D. Defrère, Liège Univ. (Belgium)
M. Ireland, The Australian National Univ. (Australia)
O. Absil, Liège Univ. (Belgium)
J.-P. Berger, Univ. Grenoble Alpes, CNRS, IPAG (France)
W. C. Danchi, NASA Goddard Space Flight Ctr. (United States)
S. Ertel, Steward Observatory, The Univ. of Arizona (United States)
A. Gallenne, European Southern Observatory (Chile)
F. Hénault, Univ. Grenoble Alpes, CNRS, IPAG (France)
P. Hinz, Steward Observatory, The Univ. of Arizona (United States)
E. Huby, LESIA, Observatoire de Paris, PSL Research Univ. (France)
S. Kraus, Univ. of Exeter (United Kingdom)
L. Labadie, Univ. zu Köln (Germany)
J.-B. Le Bouquin, Univ. Grenoble Alpes, CNRS, IPAG (France)
G. Martin, Univ. Grenoble Alpes, CNRS, IPAG (France)
A. Matter, Univ. Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Lab. Lagrange (France)
B. Mennesson, Jet Propulsion Lab. (United States)
A. Mérand, European Southern Observatory (Germany)
S. Minardi, Friedrich-Schiller-Univ. Jena (Germany)
Leibniz-Institut für Astrophysik Potsdam (Germany)
J. D. Monnier, Univ. of Michigan (United States)
B. Norris, The Univ. of Sydney (Australia)
G. Orban de Xivry, Liège Univ. (Belgium)
E. Pedretti, Friedrich-Schiller-Univ. Jena (Germany)
Leibniz-Institut für Astrophysik Potsdam (Germany)
J.-U. Pott, Max-Planck-Institut für Astronomie (Germany)
M. Reggiani, Liège Univ. (Belgium)
E. Serabyn, Jet Propulsion Lab. (United States)
J. Surdej, Liège Univ. (Belgium)
K. R. W. Tristram, European Southern Observatory (Chile)
J. Woillez, European Southern Observatory (Germany)


Published in SPIE Proceedings Vol. 10701:
Optical and Infrared Interferometry and Imaging VI
Michelle J. Creech-Eakman; Peter G. Tuthill; Antoine Mérand, Editor(s)

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