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The Extrasolar Planet epsilon Eridani b - Orbit and Mass
G. Fritz Benedict, Barbara E. McArthur, George Gatewood +11
Hubble Space Telescope observations of the nearby (3.22 pc), K2 V star epsilon Eridani have been combined with ground-based astrometric and radial velocity data to determine the ma…
Polaris: Mass and Multiplicity
Nancy Remage Evans, Gail Schaefer, Howard E. Bond +9
Polaris, the nearest and brightest classical Cepheid, is a member of at least a triple system. It has a wide () physical companion, the F-type dwarf Polaris B. Polaris itself…
Dynamical Mass Estimates for Incomplete Orbits: Young Multiple Stars in Taurus and Ophiuchus
G. H. Schaefer, M. Simon, T. L. Beck +2
We present recent measurements of the orbital motion in the binaries, DF Tau and ZZ Tau, and in the triples, Elias 12, T Tau, and V853 Oph. We observed these systems with the Fine…