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Preparing the Besançon Galaxy Model for the comparison withGaia data.

Published online by Cambridge University Press:  15 February 2011

C. Turon ,
F. Meynadier ,
F. Arenou ,
M. Czekaj ,
A. C. Robin ,
X. Luri ,
F. Figueras  and
M. Haywood
M. Czekaj
Affiliation:
Universitat de Barcelona, IEEC, Barcelona, Spain
A. C. Robin
Affiliation:
Observatoire de Besançon, Besançon, France
X. Luri
Affiliation:
Universitat de Barcelona, IEEC, Barcelona, Spain
F. Figueras
Affiliation:
Universitat de Barcelona, IEEC, Barcelona, Spain
M. Haywood
Affiliation:
GEPI, Observatoire de Paris-Meudon, France
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Abstract

From the Gaia mission, kinematic and star count data, together with the physicalparameters of the stars - ages and metallicities-, will allow to characterise our Galaxypopulations and, from that, the overall Galactic gravitational potential. One of thepromising procedures to reach such goal will be to optimise the present PopulationSynthesis models by fitting, through robust statistical techniques, the large and smallscale structure and kinematics parameters that best will reproduce Gaia data. As a firststep we present here the comparison between the data from the Tycho-2 catalogue and theBesançon Galaxy Model simulations, as well as our present and future work on the modeloptimization.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 45: GAIA: At the Frontiers of Astrometry , 2010 , pp. 303 - 308
Copyright
© EAS, EDP Sciences 2011

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References

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