Some aspects of stellar modelling in the Gaia Team at the Observatoire de la Côte d'Azur

Details Some aspects of stellar modelling in the Gaia Team at the Observatoire de la Côte d'Azur Some aspects of stellar modelling in the Gaia Team at the Observatoire de la Côte d'Azur

Nov 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009sf2a.conf...61m&link_type=abstract

SF2A-2009: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, held 29 June - 4 July 2009 in

Astronomy and Astrophysics

Astrophysics

Scientific paper

The objective of the Gaia mission (2012) is to provide the largest and most accurate astrometric survey of our Galaxy. From Gaia measurements, information will be derived about the history of our Galaxy, its early formation and its chemical composition. It is therefore of crucial importance to develop and test the methods and tools that will be used in the processing and analysis of the data. The derivation of the chemical abundances will impact on the formulation of the galactic evolutionary models. We present our investigations on --1-- NLTE effects on atomic line profiles, the use of 1D or 3D modelling of the atmospheres and --2-- radiative diffusion and rotation on stellar evolution models.

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