High precision astrometry mission for the detection and characterization of nearby habitable planetary systems with NEAT

Details High precision astrometry mission for the detection and characterization of nearby habitable planetary systems with NEAT High precision astrometry mission for the detection and characterization of nearby habitable planetary systems with NEAT

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..534m&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.534

Astronomy and Astrophysics

Astronomy

Scientific paper

The NEAT (Nearby Earth Astrometric Telescope) mission is a proposition submitted to ESA for its 2010 call for M-size mission within the Cosmic Vision 2015- 2025 plan. The main scientific goal of the NEAT mission is to detect and characterize planetary systems in an exhaustive way down to 1 Earth mass in the habitable zone and further away, around nearby stars for F, G, and K spectral types. 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 that mass limit. Only extremely- high-precision astrometry, in space, can detect the dynamical effect due to even low mass orbiting planets on their central star, reaching those scientific goals. NEAT will continue the work performed by Hipparcos (1 mas precision) and Gaia (7 μas aimed) by reaching a precision that is improved by two orders of magnitude (0.05 μas, 1 accuracy). The NEAT mission profile is driven by the fact that the two main modules of the payload, the telescope and the focal plane, must be placed 40m away leading to a formation flying option that has been studied as the reference mission.

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