The Allegheny Observatory search for planetary systems

Details The Allegheny Observatory search for planetary systems The Allegheny Observatory search for planetary systems

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mont.iafcr....g&link_type=abstract

IAF, International Astronautical Congress, 42nd, Montreal, Canada, Oct. 5-11, 1991. 6 p.

Astronomy and Astrophysics

Astronomy

Astrometry, Astronomical Observatories, Planetary Systems, Red Dwarf Stars, Astronomical Photography, Orbit Perturbation, Planetary Mass, Solar System

Scientific paper

Observational data are obtained from the 0.76-meter red-light 'Thaw' refractor from stellar objects over long periods of time. Special attention is given to the reductions of two red dwarfs: Barnard's star, which exhibits a range of apparent motions, and with no significant acceleration the star Lalande 21185. No evidence for unseen companions is reported, although reference is made to the idea that the effects are too small for the instrumentation employed.

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