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High-contrast coronagraphy with NGST in the mid-IR

Published online by Cambridge University Press:  28 May 2003

Claude Aime ,
Rémi Soummer ,
A. Boccaletti ,
P. Riaud ,
D. Rouan  and
J. Baudrand
A. Boccaletti
Affiliation:
LESIA, Paris-Meudon Observatory, 5 Pl. J. Janssen, 92195 Meudon, France CEA/DAPNIA, Service d'Astrophysique, 91191 Gif-sur-Yvette, France
P. Riaud
Affiliation:
LESIA, Paris-Meudon Observatory, 5 Pl. J. Janssen, 92195 Meudon, France LISE, Haute-Provence Observatory, 04870 St. Michel l'Observatoire, France
D. Rouan
Affiliation:
LESIA, Paris-Meudon Observatory, 5 Pl. J. Janssen, 92195 Meudon, France
J. Baudrand
Affiliation:
LESIA, Paris-Meudon Observatory, 5 Pl. J. Janssen, 92195 Meudon, France
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Abstract

Numerical simulations have been carried out to assess the opportunity to detect extrasolar planets with MIRI: the mid-IR instrument of NGST. Several coronagraphs and telescope designs have been investigated. As a result, we found that very young planets (50 Myr) as well as old planets (5 Gyr) can be imaged in the thermal-IR (5 μm to 20 μm) down to a few Jupiter masses if an appropriate high-contrast coronagraph is in used. Promising results of numerical simulations are presented.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 8: Astronomy with High Contrast Imaging , 2003 , pp. 159 - 170
Copyright
© EAS, EDP Sciences, 2003

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