Gaia Stellar Chemical Abundances and Galactic Archaeology

Details Gaia Stellar Chemical Abundances and Galactic Archaeology Gaia Stellar Chemical Abundances and Galactic Archaeology

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.576..501r&link_type=abstract

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

Astronomy and Astrophysics

Astronomy

1

Gaia, Radial Velocity Spectrometer, Galaxy Evolution, Formation, Stars Abundances

Scientific paper

The chemical information derived from the Gaia data will be crucial for tagging stars in the Galaxy and thus for disentangling the Galactic history. The derivation of detailed chemical abundances using the Gaia tools (RVS, Astrometry, MBP) is examined exploring its impact on Galactic evolutionary models. We look into the difficulties for obtaining an accurate diagnostic of the Galactic chemical history, like NLTE effects, chromospheric activity and the consequences of the element diffusion in stellar interiors. Finally, we point out some open questions on the Galactic evolution that Gaia abundances can precisely help to answer.

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