Exozodiacal discs with ALADDIN: how faint can we detect them?

In this paper, we describe the expected performance of ALADDIN, a nulling interferometer project optimised for operation at Dome C. After reviewing the main atmospheric parameters pertaining to infrared interferometry on the high Antarctic plateau, we shortly describe the ALADDIN instrument and comp...

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Bibliographic Details
Published in:EAS Publications Series
Main Authors: Absil, Olivier, Coudé du Foresto, Vincent, Barillot, M., Daudigeos, X., Defrere, Denis, den Hartog, R., di Folco, E., Surdej, Jean
Format: Conference Object
Language:English
Published: EDP Sciences 2010
Subjects:
Astronomical Observatory
CONCORDIA
Physical
chemical
mathematical & earth Sciences
Space science
astronomy & astrophysics
Physique
chimie
mathématiques & sciences de la terre
Aérospatiale
astronomie & astrophysique
Antarc*
Antarctic
Online Access:https://orbi.uliege.be/handle/2268/35137
https://orbi.uliege.be/bitstream/2268/35137/1/absil_aladdin1.pdf
https://doi.org/10.1051/eas/1040037
Description
Summary:In this paper, we describe the expected performance of ALADDIN, a nulling interferometer project optimised for operation at Dome C. After reviewing the main atmospheric parameters pertaining to infrared interferometry on the high Antarctic plateau, we shortly describe the ALADDIN instrument and compute its estimated performance in terms of the smallest exozodiacal dust disc density that can be detected. Our estimations are based on a thorough end-to-end software simulator previously developed for the GENIE nulling interferometer project at VLTI. We then propose a possible mission scenario, where the southern target stars of future exo-Earth characterisation missions can be surveyed for the presence of bright exozodiacal discs (>50 zodi) within one winter-over at Concordia.

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