MASSES, LUMINOSITIES, AND ORBITAL COPLANARITIES OF THE μ ORIONIS QUADRUPLE-STAR SYSTEM FROM PHASES DIFFERENTIAL ASTROMETRY

@article{Muterspaugh2008MASSESLA,
  title={MASSES, LUMINOSITIES, AND ORBITAL COPLANARITIES OF THE $\mu$ ORIONIS QUADRUPLE-STAR SYSTEM FROM PHASES DIFFERENTIAL ASTROMETRY},
  author={Matthew W. Muterspaugh and Benjamin F. Lane and Francis C. Fekel and Maciej Konacki and Bernard F. Burke and Shrinivas R. Kulkarni and M. Mark Colavita and Michael Shao and Sloane J. Wiktorowicz},
  journal={The Astronomical Journal},
  year={2008},
  volume={135},
  pages={766-776}
}
μ Orionis was identified by spectroscopic studies as a quadruple-star system. Seventeen high-precision differential astrometry measurements of μ Ori have been collected by the Palomar High-precision Astrometric Search for Exoplanet Systems (PHASES). These show both the motion of the long-period binary orbit and short-period perturbations superimposed on that caused by each of the components in the long-period system being themselves binaries. The new measurements enable the orientations of the… 

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