Statistical Constraints for Astrometric Binaries with Nonlinear Motion

@article{Makarov2005StatisticalCF,
  title={Statistical Constraints for Astrometric Binaries with Nonlinear Motion},
  author={Valeri V. Makarov and George H. Kaplan},
  journal={The Astronomical Journal},
  year={2005},
  volume={129},
  pages={2420 - 2427}
}
Useful constraints on the orbits and mass ratios of astrometric binaries in the Hipparcos catalog are derived from the measured proper motion differences of Hipparcos and Tycho-2 (Δμ), accelerations of proper motions (), and second derivatives of proper motions (). It is shown how, in some cases, statistical bounds can be estimated for the masses of the secondary components. Two catalogs of astrometric binaries are generated, one of binaries with significant proper motion differences and the… 

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References

SHOWING 1-8 OF 8 REFERENCES

Astrometric Detection of a Low-Mass Companion Orbiting the Star AB Doradus

We report submilliarcsecond-precise astrometric measurements for the late-type star AB Doradus via a combination of VLBI (very long baseline interferometry) and HIPPARCOS data. Our astrometric

Astrometric detection of binary companions and planets: Acceleration of proper motion

Abstract : Apparent acceleration of proper motion is one of the observable manifestations of orbital motion in binary stars. Owing to the increasing accuracy of astrometric measurements, it may also

Comparisons of the Tycho-2 Catalogue Proper Motions with HIPPARCOS and ACT

The recently released Tycho-2 Catalogue is expected to supersede the currently used catalogs based on the Tycho data, specifically, the ACT Reference Catalog and the Tycho Reference Catalogue. Here

The mass-luminosity relation for stars of mass 1.0 to 0.08 solar mass

Mass-luminosity relations determined at IR wavelengths are presented for stars with masses 1.0 to 0.08 solar mass. Using IR speckle imaging techniques on a sample of nearby binaries, we have been

The proper motions of fundamental stars - I. 1535 stars from the Basic FK5

A direct combination of the positions given in the HIPPARCOS catalogue with astrometric ground-based catalogues having epochs later than 1939 allows us to obtain new proper motions for the 1535 stars

Crossing the Brown Dwarf Desert Using Adaptive Optics: A Very Close L Dwarf Companion to the Nearby Solar Analog HR 7672

We have found a very faint companion to the active solar analog HR 7672 (HD 190406; GJ 779; 15 Sge). Three epochs of high-resolution imaging using adaptive optics (AO) at the Gemini-North and Keck II