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- Volume 74 - Année 2005
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- Pegase: a space interferometer for the spectro-photometry of Pegasides
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Pegase: a space interferometer for the spectro-photometry of Pegasides
Technology roadmap for future interferometric facilities, Proceedings of the European Interferometry Initiative Workshop organized in the context of the 2005 Join European and National Astronomy Meeting "Distant Worlds", 6 - 8 July 2005, Liège University, Institute of Astrophysics, Edited by J. Surdej, D. Caro, and A. Detal
Document(s) associé(s)
Annexes
Abstract
Pegase is an answer to the CNES call for ideas for a scientific payload on its Formation Flying technological mission. It proposes a Bracewell interferometer operating in the infrared (1.5 - 6 micro-m) and visible regimes. It has small telescopes (40 cm)but a substantial baseline (25 to 500 m). Its angular resolution reaches 1~milli-arcsecond at4 microns and 100 micro-arcsecond at 0.4 micro-m. Its main scientific objectives are the spectroscopic study of weak companions including Pegasides (hot giant exoplanets) and brown dwarfs bounded to other stars, with the goal to determine the composition of the atmospheres of these objects as well as their internal structure. In the present paper, we present a general overview of the science goals and the preliminary design of the instrument, and eventually give an estimate of its expected performance.
Pour citer cet article
A propos de : O. Absil
Institut d'Astrophysique et de Géophysique, Université de Liège, Belgium
A propos de : A. Léger
Institut d'Astrophysique Spatiale, Orsay, France
A propos de : M. Ollivier
Institut d'Astrophysique Spatiale, Orsay, France
A propos de : J. Schneider
Observatoire de Paris-Meudon, France
A propos de : D. Rouan
Observatoire de Paris-Meudon, France
A propos de : X. Leyre
Alcatel Space, Cannes, France
A propos de : D. Mourard
Observatoire de la Côte d'Azur, Nice, France
A propos de : C. N. Man
Observatoire de la Côte d'Azur, Nice, France
A propos de : G. Rousset
ONERA, Châtillon, France
A propos de : F. Allard
École Normale Supérieure, Lyon, France
A propos de : F. Malbet
Laboratoire d'Astrophysique de l'Observatoire de Grenoble, France
A propos de : S. Udry
Observatoire de Genève, Switzerland
A propos de : E. Martin
Insituto des Astrofisica de Canarias, Spain