Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000stin...0074085u&link_type=abstract
Technical Report, Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States
Astronomy and Astrophysics
Astrophysics
Exploration, Extrasolar Planets, Galactic Structure, Michelson Interferometers, Astrometry, Astrophysics, Distance, Galaxies, Planets, Precision, Reference Stars, Reflexes, Space Missions
Scientific paper
The Space Interferometry Mission (SIM) will be the first spacebased long base-line Michelson interferometer designed for precision astrometry. SIM will extend the reach of astrometry to cover the entire Galaxy, and will address a wide range of problems in Galactic structure and stellar astrophysics. It will also serve as a technology precursor for future astrophysics missions using interferometers. SIM will be a powerful tool for discovering planets around nearby stars, through detection of the reflex motion, and it will directly measure masses for the planets detected this way. It will have a single-measurement precision of 1 microarcsecond in a frame defined by nearby reference stars, enabling SIM to search for planets with masses as small as a few earth masses around the nearest star. More massive planets will be detectable to much larger distances.
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