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The role of pre-Gaia positional data in determining binary orbits with Gaia data†

Published online by Cambridge University Press:  01 October 2007

S. L. Ren  and
Y. N. Fu
S. L. Ren
Affiliation:
Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, 210008, China email: rensl@pmo.ac.cn or fyn@pmo.ac.cn
Y. N. Fu
Affiliation:
Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, 210008, China email: rensl@pmo.ac.cn or fyn@pmo.ac.cn
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Abstract

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Simulations show that incorporating the pre-Gaia positional data into the Gaia astrometric data can significantly improve the efficiency of determining binary orbits, especially for those binaries with periods from 8 to 25 years.

Keywords

stars: fundamental parametersbinaries: generalmethods: data analysis
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S248: A Giant Step: from Milli- to Micro-arcsecond Astrometry , October 2007 , pp. 16 - 17
Copyright
Copyright © International Astronomical Union 2008

References

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