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NEAT: An Astrometric Mission to Detect and Characterize Nearby Habitable Planetary Systems

Published online by Cambridge University Press:  29 April 2014

Fabien Malbet ,
Antoine Crouzier ,
Renaud Goullioud ,
Pierre-Olivier Lagage ,
Alain Léger ,
Mike Shao  and
the NEAT collaboration
Fabien Malbet
Affiliation:
Institut de Plantologie et d'Astrophysique de Grenoble (IPAG), UJF-Grenoble 1 / CNRS-INSU, UMR 5274, BP 53, F-38041 Grenoble, France email: [email protected]
Antoine Crouzier
Affiliation:
Institut de Plantologie et d'Astrophysique de Grenoble (IPAG), UJF-Grenoble 1 / CNRS-INSU, UMR 5274, BP 53, F-38041 Grenoble, France email: [email protected]
Renaud Goullioud
Affiliation:
Jet Propulsion Laboratory (JPL), California Institute of Technology 4800 Oak Grove Drive, Pasadena, CA 91109, USA
Pierre-Olivier Lagage
Affiliation:
Laboratoire AIM, CEA-IRFU/CNRS-INSU/Univ. Paris Diderot, CEA Saclay, UMR 7158 Bat. 709, 91191 Gif-sur-Yvette Cedex, France
Alain Léger
Affiliation:
Institut d'Astrophysique Spatiale (IAS), Univ. Paris Sud/CNRS-INSU, UMR 8617 Bat. 120-121, 91405 Orsay cedex, France
Mike Shao
Affiliation:
Jet Propulsion Laboratory (JPL), California Institute of Technology 4800 Oak Grove Drive, Pasadena, CA 91109, USA
the NEAT collaboration
Affiliation:
see NEAT webpage at http://neat.obs.ujf-grenoble.fr
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Abstract

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Many planets have been detected so far but very few around nearby stars that could allow characterization of their atmosphere thanks to their proximity. There are known exoplanets around less than 8.3% of the FGK stars of the Solar neighborhood (d<20 pc) and the vast majority of them are giant planets. Within the ESA Cosmic Vision 2015-2025 plan, the scientific goal of the NEAT (Nearby Earth Astrometric Telescope) mission is to detect and characterize planetary systems around these nearby stars in an exhaustive way down to 1 Earth-mass in the habitable zone. This survey would provide the actual planetary masses, the full characterization of the orbits including their inclination, for all the components of the planetary system down to the Earth-mass limit. NEAT will continue the work performed by Hipparcos and Gaia by reaching a precision that is improved by two orders of magnitude on pointed targets compared to Gaia. We present the free-flyer concept that has been submitted to the 2010 ESA call for M3 missions with two satellites flying in formation 40m apart.

Keywords

ExoplanetsAstrometryPlanet formationHigh angular resolution technique
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S293: Formation, Detection, and Characterization of Extrasolar Habitable Planets , August 2012 , pp. 448 - 453
Copyright
Copyright © International Astronomical Union 2014 

References

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