Correcting Systematic Errors in the Determination of Proper Motions in the Galaxy

Details Correcting Systematic Errors in the Determination of Proper Motions in the Galaxy Correcting Systematic Errors in the Determination of Proper Motions in the Galaxy

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.576..675k&link_type=abstract

"Proceedings of the Gaia Symposium "The Three-Dimensional Universe with Gaia" (ESA SP-576). Held at the Observatoire de Paris-Me

Physics

Aberration, Proper Motions, Parallaxes

Scientific paper

After a reminder of what is the aberration in proper motions as seen from the barycentre of the Solar System, different ways of correcting the observed proper motions are discussed using a simple model of galactic potential. A simulation shows that adding the information provided by radial velocities may greatly improve the determination of the correction and may also be used to improve the distances provided by the parallaxes. However, to do this, it necessary to have a model of the gravitational potential in the Galaxy.

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