Nulling interferometry; VLTI; exoplanets; exozodiacal disks; high contrast imaging; high angular resolution; optical fibers; long baseline interferometry
Abstract :
[en] NOTT (formerly Hi-5) is the L’-band (3.5-4.0 μm) nulling interferometer of Asgard, an instrument suite in preparation for the VLTI visitor focus. The primary scientific objectives of NOTT include characterizing (i) young planetary systems near the snow line, a critical region for giant planet formation, and (ii) nearby mainsequence stars close to the habitable zone, with a focus on detecting exozodiacal dust that could obscure Earthlike
planets. In 2023-2024, the final warm optics have been procured and assembled in a new laboratory at KU Leuven. First fringes and null measurements were obtained using a Gallium Lanthanum Sulfide (GLS) photonic chip that was also tested at cryogenic temperatures. In this paper, we present an overall update of the NOTT project with a particular focus on the cold mechanical design, the first results in the laboratory with the final NOTT warm optics, and the ongoing Asgard integration activities. We also report on other ongoing activities such as the characterization of the photonic chip (GLS, LiNbO3, SiO), the development of the exoplanet science case, the design of the dispersion control module, and the progress with the self-calibration data reduction software.
Research Center/Unit :
CSL - Centre Spatial de Liège - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Defrere, Denis ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Planetary & Stellar systems Imaging Laboratory
Laugier, Romain
Martinod, Marc-Antoine
Garreau, Germain
Missiaen, Kwinten
Salman, Muhammad
Raskin, Gert
Dandumont, Colin ; Université de Liège - ULiège > Unités de recherche interfacultaires > Space sciences, Technologies and Astrophysics Research (STAR)
Ertel, Steve
Ireland, Michael J.
Kraus, Stefan
Labadie, Lucas
Mazzolli, Alexandra
Medgyesi, Gyorgy
Sanny, Ahmed
Absil, Olivier ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO)
Abraham, Peter
Berger, Jean-Philippe
Bonduelle, Myriam
Bigioli, Azzurra
Bouzerand, Emilie
Carter, Josh
Cvetojevic, Nick
Courtney-Barrer, Benjamin
Glauser, Adrian M.
Gross, Simon
Haubois, Xavier
James, Noel
Joo, Andras
Lagarde, Stéphane
Leger, Alain
Leisenring, Jarron
Loicq, Jerôme ; Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège)
Martin, Guillermo
Martinache, Frantz
Mezo, György
Morel, Sébastien
Morren, Johan
Ollivier, Marc
Robertson, Gordon
Rousseau, Hélène ; Université de Liège - ULiège > Aérospatiale et Mécanique (A&M)
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
Pages :
14
Peer reviewed :
Editorial Reviewed verified by ORBi
European Projects :
H2020 - 866070 - SCIFY - Self-Calibrated Interferometry for Exoplanet Spectroscopy H2020 - 101004719 - ORP - Opticon RadioNet Pilot H2020 - 101003096 - GAIA-BIFROST - GAIA-BInaries: Formation and fundamental pRoperties Of Stars and planeTary systems
Name of the research project :
SCIFY
Funders :
ERC - European Research Council NASA - National Aeronautics and Space Administration EU - European Union
Funding text :
SCIFY has received funding from the European Research Council (ERC) under the European Union’s Horizon
2020 research and innovation program (grant agreement CoG - 866070). This project has received funding
from the European Union’s Horizon 2020 research and innovation programme under grant agreement No
101004719. S.K. acknowledges support from an ERC Consolidator Grant (“GAIA-BIFROST”, grant agreement
No. 101003096). SE is supported by the National Aeronautics and Space Administration through the Astrophysics
Decadal Survey Precursor Science program (Grant No. 80NSSC23K1473). We are grateful for the kind
support and constructive interactions with colleagues at ESO, in particular Fr´ed´eric Gonte and Antoine M´erand.
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