[Détecter des planètes extra-solaires avec le télescope spatial japonais de 3.5 m SPICA]
Nous présentons le télescope spatial SPICA (SPace Infrared telescope for Cosmology and Astrophysics) dont la date de lancement est prévue aux alentours de 2015 grâce au lanceur japonais HII-A. Nous discutons plus spécifiquement de son utilisation pour la detection et l'observation directe des planètes extra-solaires. Ce télescope refroidi à 4,5 K, avec son miroir monolithique de 3,5 m, est principalement conçu pour observer dans l'infra-rouge moyen et lointain, et jusqu'aux longueurs d'ondes submillimétriques (200 μm). En raison de la faible résolution angulaire à ces longueurs d'ondes, la partie basse du spectre (de 5 à 20 μm) sera utilisée pour l'imagerie à très haute dynamique par coronographie. Cet article décrit le projet du coronographe de SPICA du point de vue des objectifs scientifiques, mais également de nos efforts dans l'étude d'un concept coronographique compatible avec les contraintes imposées par l'architecture du télescope.
We present the 3.5 m SPace Infrared telescope for Cosmology and Astrophysics (SPICA) space telescope, the launch of which is schedule around year 2015 by the Japanese HII-A rocket, and specifically discuss its use in the context of direct observation of extra-solar planets. This actively cooled (4.5 K), single aperture telescope will operate in the mid and far infrared spectral regions, and up to submillimetric wavelengths (200 μm). The lowest spectral region (5 to 20 μm), where the spatial resolution is the most favorable, will be dedicated to high contrast imaging with coronagraphy. This article describes the SPICA coronagraph project in terms of science, as well as our efforts to study a suitable instrumental concept, compatible with the constraints of the telescope architecture.
Mot clés : Exoplanètes, Coronographie, Spectroscopie, Télescope spatial
Lyu Abe 1 ; Keigo Enya 2 ; Shinichiro Tanaka 2, 3 ; Takao Nakagawa 2 ; Hirokazu Kataza 2 ; Motohide Tamura 1 ; Olivier Guyon 4
@article{CRPHYS_2007__8_3-4_374_0,
author = {Lyu Abe and Keigo Enya and Shinichiro Tanaka and Takao Nakagawa and Hirokazu Kataza and Motohide Tamura and Olivier Guyon},
title = {Detecting extra-solar planets with the {Japanese} 3.5 m {SPICA} space telescope},
journal = {Comptes Rendus. Physique},
pages = {374--384},
publisher = {Elsevier},
volume = {8},
number = {3-4},
year = {2007},
doi = {10.1016/j.crhy.2007.02.007},
language = {en},
}
TY - JOUR AU - Lyu Abe AU - Keigo Enya AU - Shinichiro Tanaka AU - Takao Nakagawa AU - Hirokazu Kataza AU - Motohide Tamura AU - Olivier Guyon TI - Detecting extra-solar planets with the Japanese 3.5 m SPICA space telescope JO - Comptes Rendus. Physique PY - 2007 SP - 374 EP - 384 VL - 8 IS - 3-4 PB - Elsevier DO - 10.1016/j.crhy.2007.02.007 LA - en ID - CRPHYS_2007__8_3-4_374_0 ER -
%0 Journal Article %A Lyu Abe %A Keigo Enya %A Shinichiro Tanaka %A Takao Nakagawa %A Hirokazu Kataza %A Motohide Tamura %A Olivier Guyon %T Detecting extra-solar planets with the Japanese 3.5 m SPICA space telescope %J Comptes Rendus. Physique %D 2007 %P 374-384 %V 8 %N 3-4 %I Elsevier %R 10.1016/j.crhy.2007.02.007 %G en %F CRPHYS_2007__8_3-4_374_0
Lyu Abe; Keigo Enya; Shinichiro Tanaka; Takao Nakagawa; Hirokazu Kataza; Motohide Tamura; Olivier Guyon. Detecting extra-solar planets with the Japanese 3.5 m SPICA space telescope. Comptes Rendus. Physique, Volume 8 (2007) no. 3-4, pp. 374-384. doi : 10.1016/j.crhy.2007.02.007. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2007.02.007/
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