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Configurations and Modulation Schemes Trade-off
Absil, Olivier
2003In Lacoste, H. (Ed.) GENIE - DARWIN Workshop - Hunting for Planets
 

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Abstract :
[en] During the preliminary phase A of the Ground-based European Nulling Interferometer Experiment (GENIE), a number of interferometric configurations have been studied, in the cases of exozodiacal cloud and hot Jupiter detection. Their expected performances have been computed in light of the measured or expected performances of the VLTI subsystems. A simple Bracewell nulling interferometer, formed of two Unit Telescopes and working in the L’ or N bands, has been identified as a good candidate configuration for exozodiacal cloud detection. External or internal chopping, fringe tracking and intensity matching will be critical issues for this configuration. In the case of hot Jupiter detection, a double Bracewell with internal modulation in the L’ band seems well appropriate, and should allow to carry out low resolution spectroscopy on a few bright exoplanets. The basic assumptions and computations which have lead to these candidate configurations are described in this paper.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Absil, Olivier  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Language :
English
Title :
Configurations and Modulation Schemes Trade-off
Publication date :
March 2003
Event name :
GENIE - DARWIN Workshop - Hunting for Planets
Event organizer :
ESA
Event place :
Noordwijk, Netherlands
Event date :
du 3 au 6 juin 2002
By request :
Yes
Audience :
International
Main work title :
GENIE - DARWIN Workshop - Hunting for Planets
Editor :
Lacoste, H.
Publisher :
ESA, Noordwijk, Netherlands
ISBN/EAN :
92-9092-832-8
Collection name :
ESA SP-522
Pages :
9.1-9.10
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