Gaia Spectroscopy

241025.GaiaSpectroscopy_ARB

Alejandra Recio-Blanco

Laboratoire Lagrange, Observatoire de la Côte d'Azur, France

Venerdì 25 Ottobre 2024, ore 11.00 – Sala Seminari Villa Magliola INAF-OATo

SEGUI IL SEMINARIO IN STREAMING

Abstract

Thanks to a powerful large statistics, homogeneity, precision and spectral fidelity, the Gaia RVS chemical cartography is revolutionising our understanding of the disc chemical abundances. In this talk, I will present several aspects of this revolution.

First of all, I will illustrate the Gaia RVS spectral fidelity, unexpected for a large part of the scientific community, showing comparisons with asteroseismic data and other scientific validation examples.

Then, I will present different results on Galactic disc populations as the chemical signature of the spiral arms,the double RGB sequences of the thin and thick disc, the chemical pattern of the disc kinematical perturbances, the possible sign of a recent gas infall event and the disc s-element abundance trends.

Referente locale: Eloisa Poggio