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Proceedings Paper • Open Access

an integrated payload design for the atmospheric remote-sensing infrared exoplanet large-survey (ARIEL): results from phase A and forward look to phase B1
Author(s): Kevin F. Middleton; Giovanna Tinetti; Jean-Philippe Beaulieu; Manuel Güdel; Paul Hartogh; Paul Eccleston; Giuseppina Micela; Michiel Min; Miroslaw Rataj; Tom Ray; Ignasi Ribas; Bart Vandenbussche; Jean-Louis Auguères; Georgia Bishop; Vania Da Deppo; Isabel Escudero Sanz; Mauro Focardi; Thomas Hunt; Giuseppe Malaguti; Gianluca Morgante; Marc Ollivier; Emanuele Pace; Enzo Pascale; William Taylor

Paper Abstract

ARIEL (the Atmospheric Remote-sensing Infrared Exoplanet Large-survey) has been selected by ESA as the next medium-class science mission (M4), expected to be launched in 2028. The mission will be devoted to observing spectroscopically in the infrared a large population of warm and hot transiting exoplanets (temperatures from ~500 K to ~3000 K) in our nearby Galactic neighborhood, opening a new discovery space in the field of extrasolar planets and enabling the understanding of the physics and chemistry of these far away worlds. ARIEL was selected for implementation by ESA in March 2018 from three candidate missions that underwent parallel phase A studies. This paper gives an overview of the design at the end of phase A and discusses plans for its evolution during phase B1, in the run-up to mission adoption.

ARIEL is based on a 1 m class telescope feeding two instruments: a moderate resolution spectrometer covering the wavelengths from 1.95 to 7.8 microns; and a three-channel photometer (which also acts as a fine guidance sensor) with bands between 0.5 and 1.2 microns combined with a low resolution spectrometer covering 1.25 to 1.9 microns. During its 3.5 years of operation from an L2 orbit, ARIEL will continuously observe exoplanets transiting their host star.

This paper presents an overall view of the integrated design of the payload proposed for this mission. The design tightly integrates the various payload elements in order to allow the exacting photometric stability targets to be met, while providing simultaneous spectral and photometric data from the visible to the mid-infrared. We identify and discuss the key requirements and technical challenges for the payload and describe the trade-offs that were assessed during phase A, culminating in the baseline design for phase B1. We show how the design will be taken forward to produce a fully integrated and calibrated payload for ARIEL that can be built within the mission and programmatic constraints and will meet the challenging scientific performance required for transit spectroscopy.

Paper Details

Date Published: 12 July 2019
PDF: 7 pages
Proc. SPIE 11180, International Conference on Space Optics — ICSO 2018, 1118036 (12 July 2019); doi: 10.1117/12.2536033
Show Author Affiliations
Kevin F. Middleton, STFC Rutherford Appleton Lab. (United Kingdom)
Giovanna Tinetti, Univ. College London (United Kingdom)
Jean-Philippe Beaulieu, IAP, CNRS (France)
Manuel Güdel, Univ. Wien (Austria)
Paul Hartogh, Max-Planck-Institut für Sonnensystemforschung (Germany)
Paul Eccleston, STFC Rutherford Appleton Lab. (United Kingdom)
Giuseppina Micela, Osservatorio Astronomico di Palermo (Italy)
Michiel Min, SRON Netherlands Institute for Space Research (Netherlands)
Miroslaw Rataj, Space Research Ctr. Polish Academy of Sciences (Poland)
Tom Ray, Dublin Institute for Advanced Studies (Ireland)
Ignasi Ribas, Institut de Ciències de l'Espai (Spain)
Bart Vandenbussche, Institute of Astronomy Katholieke Univ. Leuven (Belgium)
Jean-Louis Auguères, CEA-Saclay (France)
Georgia Bishop, STFC Rutherford Appleton Lab. (United Kingdom)
Vania Da Deppo, CNR-Istituto di Fotonica e Nanotecnologie (Italy)
Isabel Escudero Sanz, European Space Research and Technology Ctr. (Netherlands)
Mauro Focardi, INAF – Osservatorio Astrofisico di Torino (Italy)
Thomas Hunt, Mullard Space Science Lab. (United Kingdom)
Giuseppe Malaguti, INAF-OAS (Italy)
Gianluca Morgante, INAF-IASF (Italy)
Marc Ollivier, IAS, CNRS (France)
Emanuele Pace, Univ. of Florence (Italy)
Enzo Pascale, Univ. of Rome (Italy)
Cardiff Univ. (United Kingdom)
William Taylor, UK Astronomy Technology Ctr. (United Kingdom)


Published in SPIE Proceedings Vol. 11180:
International Conference on Space Optics — ICSO 2018
Zoran Sodnik; Nikos Karafolas; Bruno Cugny, Editor(s)

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