Article (Scientific journals)
Space-based infrared interferometry to study exoplanetary atmospheres
Defrere, Denis; Léger, A.; Absil, Olivier et al.
2018In Experimental Astronomy, 46 (3), p. 543-560
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Keywords :
Space interferometer; Infrared astronomy; Darwin; TPF-I; Exoplanet; Habitability; Bio-signatures
Abstract :
[en] The quest for other habitable worlds and the search for life among them are major goals of modern astronomy. One way to make progress towards these goals is to obtain high-quality spectra of a large number of exoplanets over a broad range of wavelengths. While concepts currently investigated in the United States are focused on visible/NIR wavelengths, where the planets are probed in reflected light, a compelling alternative to characterize planetary atmospheres is the mid-infrared waveband (5-20um). Indeed, mid-infrared observations provide key information on the presence of an atmosphere, the surface conditions (e.g., temperature, pressure, habitability), and the atmospheric composition in important species such as H2O, CO2, O3, CH4, and N2O. This information is essential to investigate the potential habitability of exoplanets and to make progress towards the search for life in the universe. Obtaining high-quality mid-infrared spectra of exoplanets from the ground is however extremely challenging due to the overwhelming brightness and turbulence of Earth's atmosphere. In this paper, we present a concept of space-based mid-infrared interferometer that can tackle this observing challenge and discuss the main technological developments required to launch such a sophisticated instrument.
Research center :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Defrere, Denis ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Léger, A.
Absil, Olivier  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Beichman, C.
Biller, B.
Danchi, W. C.
Ergenzinger, K.
Eiroa, C.
Ertel, S.
Fridlund, M.
Garcia Munoz, A.
Gillon, Michaël  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Glasse, A.
Godolt, M.
Grenfell, J. L.
Kraus, S.
Labadie, L.
Lacour, S.
Liseau, R.
Martin, G.
Mennesson, B.
Micela, G.
Minardi, S.
Quanz, S. P.
Rauer, H.
Rinehart, S.
Santos, N. C.
Selsis, F.
Surdej, Jean  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Tian, F.
Villaver, E.
Wheatley, P. J.
Wyatt, M.
More authors (23 more) Less
Language :
English
Title :
Space-based infrared interferometry to study exoplanetary atmospheres
Publication date :
29 November 2018
Journal title :
Experimental Astronomy
ISSN :
0922-6435
eISSN :
1572-9508
Publisher :
Kluwer Academic Publishers, Netherlands
Volume :
46
Issue :
3
Pages :
543-560
Peer reviewed :
Peer Reviewed verified by ORBi
European Projects :
FP7 - 337569 - VORTEX - Taking extrasolar planet imaging to a new level with vector vortex coronagraphy
Funders :
CE - Commission Européenne [BE]
Available on ORBi :
since 19 January 2018

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