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Issue EAS Publications Series
Volume 8, 2003
Astronomy with High Contrast Imaging
Page(s) 159 - 170
DOI 10.1051/eas:2003059

Astronomy with High Contrast Imaging
C. Aime and R. Soummer (eds)
EAS Publications Series, Vol. 8, 2003

DOI: 10.1051/eas:2003059

High-contrast coronagraphy with NGST in the mid-IR

A. Boccaletti1, 2, P. Riaud1, 3, D. Rouan1 and J. Baudrand1

1  LESIA, Paris-Meudon Observatory, 5 Pl. J. Janssen, 92195 Meudon, France
2  CEA/DAPNIA, Service d'Astrophysique, 91191 Gif-sur-Yvette, France
3  LISE, Haute-Provence Observatory, 04870 St. Michel l'Observatoire, France


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 ( $5~\mu$m to 20  $\mathrm{\mu}$m) down to a few Jupiter masses if an appropriate high-contrast coronagraph is in used. Promising results of numerical simulations are presented.



© EAS, EDP Sciences 2003


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