Gaia and the Astrometric Global Iterative Solution

Details Gaia and the Astrometric Global Iterative Solution Gaia and the Astrometric Global Iterative Solution

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008iaus..248..268h&link_type=abstract

A Giant Step: from Milli- to Micro-arcsecond Astrometry, Proceedings of the International Astronomical Union, IAU Symposium, Vol

Astronomy and Astrophysics

Astronomy

1

Astrometry, Methods: Data Analysis, Methods: Numerical, Reference Systems

Scientific paper

Gaia is an ESA space astrometry mission due for launch in 2011 12. We describe part of the work carried out in the Gaia Data Processing and Analysis Consortium, namely the Astrometric Global Iterative Solution (AGIS) currently being implemented at the European Space Astronomy Center (ESAC) in Spain and largely based on algorithms developed at Lund Observatory. Some provisional results based on simulated observations of one million stars are presented, demonstrating convergence at microarcsec level independent of initial conditions.

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