1/1/2023 0 Comments Astrometry exoplanets![]() ![]() However, we have identified the need to continue these technology development efforts to achieve sub-microarcsecond astrometry precision necessary for detection and characterization of Earth-like planets around nearby FGK stars. Both technical challenges are now being addressed successfully in the laboratory. On the instrumental side, precision astrometry is limited by optical field distortion and detector calibration issues. The intrinsic astrophysical noise floor set by star spots and stellar surface activity is about a factor of ten more benign for astrometry than for the more established technique of Radial Velocity, widening the discovery region and pushing detection thresholds to lower masses than previously possible. The scientific potential of astrometry will be enormous. Precision astrometry delivers measurement of exoplanet masses, allowing discrimination of rocky planets from water worlds and enabling much better modeling of their atmosphere improving species retrieval from spectroscopy. Eduardo Bendek NASA Ames Research Center / BAERI Email: Ph:+1-65Ībstract Exoplanets mass measurements will be a critical next step to assess the habitability of Earth-like planets: a key aspect of the 2020 vision in the previous decadal survey and also central to NASA's strategic priorities. NASA Ames Research Center, Moffett Field, CA, 94035 Bay Area Environmental Research Institute, Moffett Field, CA, 94035 3 Jet Propulsion Laboratory, Pasadena, CA, 91109 4 University of Arizona, Tucson, Arizona 85721, USA 5 Sydney Institute for Astronomy, University of Sydney, NSW 2006, Australia 2 ![]() ![]() Marley1, Michael Shao3, Olivier Guyon 4, Ruslan Belikov1, Peter Tuthill5 1 THE VALUE OF ASTROMETRY FOR EXOPLANET SCIENCE National Academy of Sciences The Committee on Exoplanet Science Strategy call for white papers WHITE PAPER Eduardo A. ![]()
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