Infra arcsec, infra mJy astronomy: exoplanetary scene models for exo-Earth detection through IR interferometric nulling
| Autor: | Stephen Dunne, Stephane Bonnot, O. Germain, Didier Miras, Adrian R. Belu, Rodolphe Krawczyk, Christian Erd, Malcolm Fridlund, Guilaine Lagache, Farrokh Vakili, Roland den Hartog, Marc Ollivier |
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| Přispěvatelé: | Laboratoire Hippolyte Fizeau (FIZEAU), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Physics
Galactic astronomy 010308 nuclear & particles physics Astrophysics::Instrumentation and Methods for Astrophysics Astronomy Iterative reconstruction Astrophysics 01 natural sciences Galaxy Data modeling Interferometry Planet 0103 physical sciences Orbital motion Cirrus 010303 astronomy & astrophysics |
| Zdroj: | 2006, France |
| Popis: | We have conducted an exhaustive inventory of potential astrophysical "noise sources" with respect to the detection and characterisation of Earth-like planets, focusing on the specifics of the nulling interferometry technique. We have extrapolated their characterisation at these yet-to-be-attained resolution and sensitivity, from existing data and models. They range from stellar features and significant orbital motion of pegasides during exposure, to exozodiacal cloud structures, background galaxies and galactic cirrus emission. This enabled us to evaluate the offset between the various features a typical interferometric nulling field-of-view (FOV) is likely to exhibit in reality, and the simplified, planet-only, detection FOV model generally used. This work is complementary to precise nulling data model formalization and detection algorithms development (Thiebaut et al., this conference), together conducted in the frame of an ESA contract by an Alcatel Alenia Space-led consortium. As such, part of this work is under embedment into a Java open-source simulator (ORIGIN). This approach can be useful for less signal-entangling, direct imaging techniques. |
| Databáze: | OpenAIRE |
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