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Review and scientific prospects of high-contrast optical stellar interferometry
Defrere, Denis; Absil, Olivier; Berger, J.-P et al.
2020In Proceedings of SPIE: The International Society for Optical Engineering, 11446
 

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Keywords :
high angular resolution imaging; interferometry; nulling; VLTI; LBTI; KIN; PFN; PFI; LIFE; Hi-5; BIFROST; GRAVITY; ASGARD; planet formation; protoplanetary disks; extrasolar planets; exoplanets; exozodiacal disks
Abstract :
[en] High-contrast optical stellar interferometry generally refers to instruments able to detect circumstellar emission at least a few hundred times fainter than the host star at high-angular resolution (typically within a few \lambda/D). While such contrast levels have been enabled by classical modal-filltered interferometric instruments such asVLTI/PIONIER, CHARA/FLUOR, and CHARA/MIRC the development of instruments able to fi lter out the stellar light has signi cantly pushed this limit, either by nulling interferometry for on-axis observations (e.g., PFN, LBTI, GLINT) or by o -axis classical interferometry with VLTI/GRAVITY. Achieving such high contrast levels at small angular separation was made possible thanks to signi cant developments in technology (e.g., adaptive optics, integrated optics), data acquisition (e.g., fringe tracking, phase chopping), and data reduction techniques (e.g., nulling self-calibration). In this paper, we review the current status of high-contrast optical stellar interferometry and present its key scienti c results. We then present ongoing activities to improve current ground-based interferometric facilities for high-contrast imaging (e.g., Hi-5/VIKING/BIFROST of the ASGARD instrument suite, GRAVITY+) and the scienti c milestones that they would be able to achieve. Finally, we discuss the long-term future of high-contrast stellar interferometry and, in particular, ambitious science cases that would be enabled by space interferometry (e.g., LIFE, space-PFI) and large-scale ground-based projects (PFI).
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Defrere, Denis ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > PSILab
Absil, Olivier  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > PSILab
Berger, J.-P
Danchi, W. C.
Dandumont, Colin  ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Eisenhauer, F.
Ertel, S.
Gardner, A.
Glauser, A.
Hinz, P.
Ireland, M.
Kammerer, J.
Kraus, S.
Labadie, L.
Lacour, S.
Laugier, R.
Loicq, Jerôme ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Martin, G.
Martinache, F.
Martinod, M.A.
Mennesson, B.
Monnier, J.
Norris, B.
Nowak, M.
Pott, J.U.
Quanz, S.P.
Serabyn, E.
Stone, J.
Tuthill, P.
Woillez, J.
More authors (20 more) Less
Language :
English
Title :
Review and scientific prospects of high-contrast optical stellar interferometry
Publication date :
December 2020
Event name :
SPIE Astronomical Telescopes + Instrumentation 2020
Event organizer :
SPIE
Event date :
du 14 décembre 2020 au 18 décembre 2020
By request :
Yes
Audience :
International
Journal title :
Proceedings of SPIE: The International Society for Optical Engineering
ISSN :
0277-786X
eISSN :
1996-756X
Publisher :
International Society for Optical Engineering, Bellingham, United States - Washington
Volume :
11446
Funders :
CER - Conseil Européen de la Recherche [BE]
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