dc.contributor.author | Defrère, D | |
dc.contributor.author | Bigioli, A | |
dc.contributor.author | Dandumont, C | |
dc.contributor.author | Garreau, G | |
dc.contributor.author | Laugier, R | |
dc.contributor.author | Martinod, M-A | |
dc.contributor.author | Absil, O | |
dc.contributor.author | Berger, J-P | |
dc.contributor.author | Bouzerand, E | |
dc.contributor.author | Courtney-Barrer, B | |
dc.contributor.author | Emsenhuber, A | |
dc.contributor.author | Ertel, S | |
dc.contributor.author | Gagne, J | |
dc.contributor.author | Glauser, AM | |
dc.contributor.author | Gross, S | |
dc.contributor.author | Ireland, MJ | |
dc.contributor.author | Kenchington, H-D | |
dc.contributor.author | Kluska, J | |
dc.contributor.author | Kraus, S | |
dc.contributor.author | Labadie, L | |
dc.contributor.author | Laborde, V | |
dc.contributor.author | Leger, A | |
dc.contributor.author | Leisenring, J | |
dc.contributor.author | Loicq, J | |
dc.contributor.author | Martin, G | |
dc.contributor.author | Morren, J | |
dc.contributor.author | Matter, A | |
dc.contributor.author | Mazzoli, A | |
dc.contributor.author | Missiaen, K | |
dc.contributor.author | Salman, M | |
dc.contributor.author | Ollivier, M | |
dc.contributor.author | Raskin, G | |
dc.contributor.author | Rousseau, H | |
dc.contributor.author | Sanny, A | |
dc.contributor.author | Verlinden, S | |
dc.contributor.author | Vandenbussche, B | |
dc.contributor.author | Woillez, J | |
dc.date.accessioned | 2022-08-30T12:54:27Z | |
dc.date.issued | 2022-08-26 | |
dc.date.updated | 2022-08-28T09:48:58Z | |
dc.description.abstract | Hi-5 is the L’-band (3.5-4.0 µm) high-contrast imager of Asgard, an instrument suite in preparation for the visitor focus of the VLTI. The system is optimized for high-contrast and high-sensitivity imaging within the diffraction limit of a single UT/AT telescope. It is designed as a double-Bracewell nulling instrument producing spectrally-dispersed (R=20, 400, or 2000) complementary nulling outputs and simultaneous photometric outputs for self-calibration purposes. In this paper, we present an update of the project with a particular focus on the overall architecture, opto-mechanical design of the warm and cold optics, injection system, and development of the photonic beam combiner. The key science projects are to survey (i) nearby young planetary systems near the snow line, where most giant planets are expected to be formed, and (ii) nearby main sequence stars near the habitable zone where exozodiacal dust that may hinder the detection of Earth-like planets. We present an update of the expected instrumental performance based on full end-to-end simulations using the new GRAVITY+ specifications of the VLTI and the latest planet formation models. | en_GB |
dc.description.sponsorship | European Research Council (ERC) | en_GB |
dc.description.sponsorship | European Union Horizon 2020 | en_GB |
dc.identifier.citation | Vol. 12183, article 121830H | en_GB |
dc.identifier.doi | 10.1117/12.2627953 | |
dc.identifier.grantnumber | 866070 | en_GB |
dc.identifier.grantnumber | 10100471 | en_GB |
dc.identifier.grantnumber | 101003096 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/130607 | |
dc.identifier | ORCID: 0000-0001-6017-8773 (Kraus, Stefan) | |
dc.publisher | Society of Photo-optical Instrumentation Engineers (SPIE) | en_GB |
dc.subject | Nulling interferometry | en_GB |
dc.subject | VLTI | en_GB |
dc.subject | exoplanets | en_GB |
dc.subject | exozodiacal disks | en_GB |
dc.subject | high contrast imaging | en_GB |
dc.subject | high angular resolution | en_GB |
dc.subject | optical fibers | en_GB |
dc.subject | long baseline interferometry | en_GB |
dc.title | L-band nulling interferometry at the VLTI with Asgard/Hi-5: status and plans | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2022-08-30T12:54:27Z | |
dc.description | This is the final version. Available from SPIE via the DOI in this record | en_GB |
dc.description | SPIE Astronomical Telescopes + Instrumentation 2022, 17 - 22 July 2022, Montreal, Canada. | |
dc.identifier.journal | Proceedings of SPIE | |
dc.rights.uri | http://www.rioxx.net/licenses/all-rights-reserved | en_GB |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2022-08-18 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2022-08-30T12:52:41Z | |
refterms.versionFCD | AM | |
refterms.dateFOA | 2022-10-05T10:23:30Z | |
refterms.panel | B | en_GB |