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O. Absil, A. Léger, M. Ollivier, J. Schneider, D. Rouan, X. Leyre, D. Mourard, C. N. Man, G. Rousset, F. Allard, F. Malbet, S. Udry & E. Martin

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

Article Open Access

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.

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O. Absil, A. Léger, M. Ollivier, J. Schneider, D. Rouan, X. Leyre, D. Mourard, C. N. Man, G. Rousset, F. Allard, F. Malbet, S. Udry & E. Martin, «Pegase: a space interferometer for the spectro-photometry of Pegasides», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 74 - Année 2005, Numéros 1-2- 3, 183 - 190 URL : http://popups.ulg.ac.be/0037-9565/index.php?id=3764.

A propos de : D. Mourard

Observatoire de la Côte d'Azur, Nice, France

A propos de : F. Malbet

Laboratoire d'Astrophysique de l'Observatoire de Grenoble, France

A propos de : O. Absil

Institut d'Astrophysique et de Géophysique, Université de Liège, Belgium

A propos de : J. Schneider

Observatoire de Paris-Meudon, France

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 : D. Rouan

Observatoire de Paris-Meudon, France

A propos de : X. Leyre

Alcatel Space, Cannes, 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 : S. Udry

Observatoire de Genève, Switzerland

A propos de : E. Martin

Insituto des Astrofisica de Canarias, Spain