L-band nulling interferometry at the VLTI with Asgard/NOTT: status and plans

Denis Defrère; Romain Laugier; Marc-Antoine Martinod; Germain Garreau; Kwinten Missiaen; Muhammad Salman; Gert Raskin; Colin Dandumont; Steve Ertel; Michael J. Ireland; Stefan Kraus; Lucas Labadie; Alexandra Mazzolli; Gyorgy Medgyesi; Ahmed Sanny; Olivier Absil; Peter Ábráham; Jean-Philippe Berger; Myriam Bonduelle; Azzurra Bigioli; Emilie Bouzerand; Josh Carter; Nick Cvetojevic; Benjamin Courtney-Barrer; Adrian M. Glauser; Simon Gross; Xavier Haubois; Noel James; Andras Peter Joo; Stephane Lagarde; Alain Léger; Jarron Leisenring; Jérôme Loicq; Guillermo Martin; Frantz Martinache; Gyorgy Mezo; Sébastien Morel; Johan Morren; Marc Ollivier; Gordon Robertson; Hélène Rousseau; Warrick Schofield; Nicolas Schuhler; Adam Taras; Bart Vandenbussche; Julien Woillez

doi:10.1117/12.3019922

28 August 2024 L-band nulling interferometry at the VLTI with Asgard/NOTT: status and plans

Denis Defrère, Romain Laugier, Marc-Antoine Martinod, Germain Garreau, Kwinten Missiaen, Muhammad Salman, Gert Raskin, Colin Dandumont, Steve Ertel, Michael J. Ireland, Stefan Kraus, Lucas Labadie, Alexandra Mazzolli, Gyorgy Medgyesi, Ahmed Sanny, Olivier Absil, Peter Ábráham, Jean-Philippe Berger, Myriam Bonduelle, Azzurra Bigioli, Emilie Bouzerand, Josh Carter, Nick Cvetojevic, Benjamin Courtney-Barrer, Adrian M. Glauser, Simon Gross, Xavier Haubois, Noel James, Andras Peter Joo, Stephane Lagarde, Alain Léger, Jarron Leisenring, Jérôme Loicq, Guillermo Martin, Frantz Martinache, Gyorgy Mezo, Sébastien Morel, Johan Morren, Marc Ollivier, Gordon Robertson, Hélène Rousseau, Warrick Schofield, Nicolas Schuhler, Adam Taras, Bart Vandenbussche, Julien Woillez

Author Affiliations +

Proceedings Volume 13095, Optical and Infrared Interferometry and Imaging IX; 130950F (2024) https://doi.org/10.1117/12.3019922
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

NOTT (formerly Hi-5) is the L’-band (3.5-4.0μm) 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.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Denis Defrère, Romain Laugier, Marc-Antoine Martinod, Germain Garreau, Kwinten Missiaen, Muhammad Salman, Gert Raskin, Colin Dandumont, Steve Ertel, Michael J. Ireland, Stefan Kraus, Lucas Labadie, Alexandra Mazzolli, Gyorgy Medgyesi, Ahmed Sanny, Olivier Absil, Peter Ábráham, Jean-Philippe Berger, Myriam Bonduelle, Azzurra Bigioli, Emilie Bouzerand, Josh Carter, Nick Cvetojevic, Benjamin Courtney-Barrer, Adrian M. Glauser, Simon Gross, Xavier Haubois, Noel James, Andras Peter Joo, Stephane Lagarde, Alain Léger, Jarron Leisenring, Jérôme Loicq, Guillermo Martin, Frantz Martinache, Gyorgy Mezo, Sébastien Morel, Johan Morren, Marc Ollivier, Gordon Robertson, Hélène Rousseau, Warrick Schofield, Nicolas Schuhler, Adam Taras, Bart Vandenbussche, and Julien Woillez "L-band nulling interferometry at the VLTI with Asgard/NOTT: status and plans", Proc. SPIE 13095, Optical and Infrared Interferometry and Imaging IX, 130950F (28 August 2024); https://doi.org/10.1117/12.3019922

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