10+ Years of STEPS Astrometry

Details 10+ Years of STEPS Astrometry 10+ Years of STEPS Astrometry

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21430607p&link_type=abstract

American Astronomical Society, AAS Meeting #214, #306.07; Bulletin of the American Astronomical Society, Vol. 41, p.729

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Scientific paper

We review the STEPS program, presenting results and looking forward to future prospects for ground-based astrometry. With STEPS we have discovered companions to several of the presumed single M-stars in our 30 star sample. All the companions were confirmed with subsequent imaging or astrometry. The smallest mass companion thus far is the brown dwarf GJ 802b with a mass of 60 MJ. Other possible smaller mass companions will be discussed. An improved ground-based program will feature high-dynamic range capability and, perhaps, venture into the infrared band. A moderate cost space mission can be based upon these principles

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