Finding Exo-Earths with Precision Space Astrometry
by Michael Shao, Slava G. Turyshev, Chengxing Zhai, Gautam Vasisht, Eduardo Bendek, Debra Fischer, Olivier Guyon, Barbara McArthur, Matthew Muterspaugh, and Celine Boehm
Published onMay 31, 2019
Finding Exo-Earths with Precision Space Astrometry
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Abstract
Astrometry may be the only technique capable of finding Earth-twins. It measures the reflex motion of a star in the plane of the sky allowing one to determine a planet’s mass and its orbital inclination. Astrometric measurements with 1 μas precision allow to search for a 1 Mearth planet in the middle of the habitable zone.
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