Astrometric Orbits for Hipparcos Stochastic Binaries

Details Astrometric Orbits for Hipparcos Stochastic Binaries Astrometric Orbits for Hipparcos Stochastic Binaries

2007-06-04

arxiv.org/abs/0706.0361v1

Astronomy and Astrophysics

Astrophysics

This is followup to astro-ph/0606293

Scientific paper

10.1086/520513

Taking advantage of an improved genetic optimization algorithm for fitting unconstrained Kepler orbits to the Hipparcos intermediate astrometric data, we obtain additional orbital solutions for 81 Hipparcos stars with previous stochastic (failed) solutions. The sample includes astrophysically interesting objects, including the old disk wide binary HIP 754, the nearby AGB star HIP 34922 (L2 Pup), and the nearby M2 dwarf HIP 5496 (GJ 54, at 8 pc from the Sun) which has a resolved M dwarf companion.

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