Defrere, D., Absil, O., Berger, J. -P., Boulet, T., Danchi, W. C., Ertel, S., Gallenne, A., Henault, F., Hinz, P., Huby, E., Ireland, M., Kraus, S., Labadie, L., Le Bouquin, J. -B., Martin, G., Matter, A., Merand, A., Mennesson, B., Minardi, S., Monnier, J. D., Norris, B., de Xivry, G. Orban, Pedretti, E., Pott, J. -U., Reggiani, M., Serabyn, E., Surdej, J., Tristram, K. R. W. and Woillez, J. (2018). The path towards high-contrast imaging with the VLTI: the Hi-5 project. Exp. Astron., 46 (3). S. 475 - 496. DORDRECHT: SPRINGER. ISSN 1572-9508

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Abstract

The development of high-contrast capabilities has long been recognized as one of the top priorities for the VLTI. As of today, the VLTI routinely achieves contrasts of a few 10(-3) in the near-infrared with PIONIER (H band) and GRAVITY (K band). Nulling interferometers in the northern hemisphere and non-redundant aperture masking experiments have, however, demonstrated that contrasts of at least a few 10(-4) are within reach using specific beam combination and data acquisition techniques. In this paper, we explore the possibility to reach similar or higher contrasts on the VLTI. After reviewing the state-of-the-art in high-contrast infrared interferometry, we discuss key features that made the success of other high-contrast interferometric instruments (e.g., integrated optics, nulling, closure phase, and statistical data reduction) and address possible avenues to improve the contrast of the VLTI by at least one order of magnitude. 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 m), a sweet spot to image and characterize young extra-solar planetary systems. Finally, we address the science cases of a high-contrast VLTI imaging instrument and focus particularly on exoplanet science (young exoplanets, planet formation, and exozodiacal disks), 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. This project is called Hi-5 for High-contrast Interferometry up to 5 m.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Defrere, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Absil, O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Berger, J. -P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Boulet, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Danchi, W. C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ertel, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gallenne, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Henault, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hinz, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Huby, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ireland, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kraus, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Labadie, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Le Bouquin, J. -B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Martin, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Matter, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Merand, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mennesson, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Minardi, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Monnier, J. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Norris, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
de Xivry, G. OrbanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pedretti, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pott, J. -U.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Reggiani, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Serabyn, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Surdej, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tristram, K. R. W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Woillez, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-163073
DOI: 10.1007/s10686-018-9593-2
Journal or Publication Title: Exp. Astron.
Volume: 46
Number: 3
Page Range: S. 475 - 496
Date: 2018
Publisher: SPRINGER
Place of Publication: DORDRECHT
ISSN: 1572-9508
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
ULTRAFAST LASER INSCRIPTION; BEAM COMBINER; WAVE-GUIDES; WATER-VAPOR; INTERFEROMETRY; ARCHITECTURE; COMBINATION; PERFORMANCE; PLANETS; LIMITSMultiple languages
Astronomy & AstrophysicsMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/16307

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